No routes found problem

This issue has been happening to me ever since I kept getting calls from a previous number and they were trying to get me to answer all types of questions about my heritage and things like that because they wanted to send out a kit to actually swab my cheek when I declined and they kept calling I said something pretty mean to the guy and now he's been stalking me on the phone ever since and now he has other people calling my phone asking for me by name... When I put my girlfriend on he'll get a female to start talking on the other end and you can hear phones ringing in the back basically to answer the question it's nobody's phone it's all on the other end.. why would a company that wants you to buy something that has people make all these calls have numbers that you can call right back and keep bugging them... It doesn't happen I don't know where they got that message no routes found but it's definitely not your phone I keep blocking the number with this kid and actually it's been going on for more than a few months my girl just pointed out I have about 200 blocked numbers so they can keep changing the number all they want and it could be the same area code or whatever... Everything I just wrote is Gospel... Have a great day