Doing the same thing to us. When told we weren't interested in what they are selling he hung up on me. We called back asking for a supervisor he put us on hold and wouldn't transfer, we called back and he must have blocked our number.
My company was phoned today from the number listed here. They were insistent on selling me a processing for my credit cards. Would not stop and I ended up hanging up on them. They then called again and I did not answer.