How can a blocked number still call you if it's blocked? Are these scammers?

My mother keeps getting calls from the same 2 numbers every day (or just about), and she blocked both. One of them somehow got around the block, which she and I both understand. We believe it's scammers trying to call her and take her money, which she will not fall for. She doesn't want to report them, but I do. Can we file a harassment claim against those numbers, or is it best to just report them to the FTC?

I'm just sick and tired of scammers. They are honestly the lowest of the low of the human race. They sit there and say "This is the only job I can do", but I'm sure there are other jobs they can do other than scamming. I hope phone companies will be able to stop these calls from happening, because if they don't, then we're all screwed.

I will not disclose the numbers because, even though I love watching other scambaiters, I want to try it for myself. Also, I don't think this platform allows you to post numbers on here.