So this caller started out as 972-253-7919, then 972-253-7803, 972-253-7501 and 972-253-7609. Every time I block one of their numbers, they go with another from their phone bank. From what I can tell, it's the Lions Club. I understand the need for persistence when it comes to fundraising, however there's a limit to what's reasonable. You'd think that when they reach a phone number that's been blocked, that they would get the hint and remove it from their list. Plus, I don't know anyone named UNAVAILABLE or PRIVATE, so those calls never get answered. If they call multiple times and don't leave a message, they get blocked. What a pain.
Calls from this phone show "unavailable," so I do not answer them, and of course, they do not leave a message. It is annoying, but I just continue to ignore them.