I'm looking into Sonetel at the moment. It seems to easy to set up. It gets a lot of bad reviews, but good apps sometimes get bad reviews. I remember looking a Vykes before. I'll give that another look if Sonetel doesn't pan out.
The good news is that I'm to the point where I don't really need to worry about the OTPs. So, basically, I want to be able to call my mom and US toll free numbers. The SSA, IRS, and Schwab don't require me to use my phone for verification.
And, as I'm not a 12-year-old, I block anyone like Jake who talks down to me about my 'drama'. I'm far from computer illiterate. My brother and I did everything correctly. A couple of times we were on the service's 'live chat' having them walk us through it. Tello, in particular, was bad at helping. They said, "you're [my brother] in a low reception area." No, he was in a major city with 5g.