[qingcharles]

I've tried for 5 years now on-and-off to talk to the current owner. They read my texts but won't answer them and don't seem to answer any call from a number they don't recognise.

I also tried to get blackhat and tried to find anyone who can intercept the text, but I've not been able to, even on some rather shady forums...

[TimBurman]

In the United States, AT&T Wireless has an Office of the President, while Verizon has Verizon Executive Relations. Other companies might have something similar. I remember the Office of the President doing some amazing things for customers, mostly related to billing that were the customer's own fault, when nobody at any tier of the call center could help them. Even calling your own phone company, they may have internal contacts at the old number company if it is different. You could also try the executives at Google or their legal team, who almost always respond to certain types of requests. When I worked for government, other governments would bend over backwards to help us, maybe companies do the same for each other or would respond to someone from the FCC or another level of government. Just brain storming but you seem like the kind of person that will eventually figure this out.