Ah, the bad old days! I actually got an apology from MG one time—knocked my socks off with surprise! Mostly just nastiness. There are a number of names that come to mind when bad behavior is discussed here.

Senoufou, your hubby shouldn't have to pay to talk to anyone anywhere in the world, if you can set up WiFi calling. I pulled up an article from C|Net: Everything you need to know about Wi-Fi calling
Curious about Wi-Fi calling and what it entails? Here's the rundown on what you need to know.

Instead of using your carrier's network connection, your phone can make a voice call via a Wi-Fi network. This is the same Wi-Fi connection you have set up at home, or whatever Wi-Fi hotspot you happen to be on when you're out and about, such as at a café or library. In most ways, it's like any other phone call, and you still use regular phone numbers.

I use WiFi calling for regular phone numbers in my contacts list. But when speaking to my family I often use the Messenger app (the equivalent of WhatsApp, I think - they're both owned by Facebook). The other end has to have the app also, or to be on a computer logged onto Facebook and pull up the in-Facebook Messenger app and have a web cam and mic.

Google closed down the "Hangout" calls but they do other stuff (Duo, I think, is a way to call) - and they have Google Fi with all sorts of features.

When my daughter spent a half-year in Japan for study abroad she rented a WiFi hotspot device to use with her phone and laptop, and we spoke regularly, voice and or video calls without any extra expense. She is able now to call friends in Japan using her home or office WiFi and speak to them on whatever system they have set up, at no cost to either.