Who called from 8142462506

Got a text from this number saying they liked my Facebook and they wanted to talk to me on Yahoo! And their name was kusimaumlisa.

I get to the phone in the evening and answer : "Hello" 4 times, then they hangup on me. I want them to be blocked so I have added a feature to my phone number to add them to. It does cost me but they keep changing the number and still do it, then I add them againg