You have the numbers blocked via your on-line MyVerizon account and they still come through? Is it calls or texts that still come through? I believe that iMessages won't be blocked.
Those are blocked/restricted numbers. You have the option to block those number if you subscribed to Usage Controls from Verizon Wireless. There is a monthly fee. You might see if there is an app in the iTunes store that will do the same thing for less cost.
I'm most definitely NOT a VZW employee. If a post answered your question, please mark it as the answer.