Here’s how much I hate calling customer service: I wasted $120 over six months just to avoid calling AT&T to turn off data service on two iPads I was no longer using.

Customer-service calls are excruciating. But what is the alternative?

I asked an executive in the industry and he recommended … not calling. Instead, last week I opened Facebook, searched for AT&T, then tapped on the message button on its page. I typed: “Hi, I need to make a change to my AT&T Wireless plan. Can you help with that?”

Lo and behold, they could. A service rep messaged me back, gathered my details and got me sorted. I never had to hunt for a human, repeat myself or endure a sales pitch.

Many of us now spend more time communicating with family and friends over messaging apps than by voice. Why wouldn’t we expect the same from companies?

The biggest shift in customer service since the 1-800 number is underway. About 20 million businesses now use Facebook Messenger each month to talk with customers.

Apple is leading companies as diverse as Lowes, Marriott and Wells Fargo into taking service queries, scheduling deliveries and even paying for purchases over iMessage. And Facebook’s WhatsApp, already used by 3 million businesses including many outside the U.S., is building a business around charging companies to better serve us over chats.

“We see more and more chatting, texting, social media interactions — and fewer and fewer voice interactions every year,” said Jamie Barton, executive vice president of sales and service at AT&T.

Business messaging isn’t the same as chatbots, which are programs that try — and often fail — to provide automatic answers to questions. This is about talking to real people, though some companies blend both automation and humans.

Messaging a business can bring new kinds of frustrations. Not every company is prepared for 21st-century customer service; some put the newbie employees on chat duty — others rely too much on robots.

And of course, there are times when you are still better off picking up the phone. (The website can help you find the real-deal numbers.)

But since getting hip to chat, I’ve had remarkably useful interactions with AT&T, with Apple to fix a problem with my iMac, and even with Harry & David to send my mom a surprise present.

Now I’m a believer that before calling, you should let your fingers do some tapping.

Polite multi-tasking

It turns out we’re nicer on text. No wonder texting businesses leaves many people happier.

LivePerson, a company that makes support software used by 18,000 companies, said that when given the option, 70 percent of people chose a “message us” button over a “call us” button on a company website or app. And it said customer satisfaction rates are 25 percent higher for chatting and messaging than for calling.

Part of it might be generational. Anyone older than 40 grew up talking to friends on the phone. Anyone younger than 20 grew up messaging them. It’s also practical: Companies can’t as easily make a hard sell over text.

Voice calls are also a tech problem. 1-800 numbers made it easy for us to call companies — but then so many of us did that it got expensive to staff and manage.

Chat and messaging systems offer relief in a few ways. We’re not stuck waiting on the phone, listening to Muzak, growing angrier by the minute.

“You can type on a keyboard anywhere, including multi-tasking while watching TV with your family,” said Matt Price, a senior vice president at Zendesk, a customer service software maker. Text is ideal for routine questions as well as for conveying technical information that you don’t want to get lost in translation.

Employees can handle multiple text conversations at once — but only one call at a time.

What about tone? You do lose some emotional context over text. When I chatted with Apple support about the issue with my iMac, the employee smartly asked early in the conversation for me to explain what solutions I had already attempted as a way to size up my technical competence. A well-placed emoji can also help.

And then there’s the employee perspective: Frustrated customers can be really, really mean over the phone, which is one reason many call centers have high turnover rates.

Hunt, then talk

Ready to text? First you might need to do a little hunting. Though options are sprouting like dandelions in May, there’s little consistency in how — and where — companies want to do it.

The most basic form is chat. It works like your AOL Instant Messenger from way back in 2000: You and someone else are in a live conversation that probably has a beginning and an end.

You might have to hang for a bit while you wait for a human to arrive in the chat. Companies put this on their websites and, increasingly, in their own apps.

Then there’s social media. As Facebook and Twitter have become bigger parts of our lives, companies were forced to respond to customer care concerns there.

Now some of them welcome it, with dedicated support teams.

Beware, though, of your privacy: Broadcasting personal details in public just for support probably isn’t a great idea. And even some private channels, like Facebook Messenger, aren’t encrypted conversations.

The next frontier is messaging. Unlike chatting, the model here is your ongoing text conversation with a buddy. You can put the phone down for a few hours and continue the conversation later.

With messaging, you and the company can both respond when you’re ready to, and go about your life the rest of the time. It works through Apple’s new Business Chat for iMessage, Facebook Messenger, WhatsApp, SMS and more.

Smartphone-obsessed China is way ahead of the United States on this.

There, millions of people use the WeChat app to subscribe to announcements and interact with companies big and small. One friend in Beijing uses a mini-app inside WeChat to sign up for classes at her gym.