They have other numbers they call from. Each time I get one, I put it on my blocked calls through Verizon. The block will work but in about a weeks time they will call from another number. I do not answer the call. I still have no idea where they got my private cell number from.
Called my cell phone, which is a number that I keep private and do not use for any financial or business reasons. They are not welcome to eat up my minutes with their spam. I went thru service provider to block this number though I'm sure I'll hear from them again.