I keep getting weird phishing type calls on my cell phone. I have no idea how they got my cell phone number. Very few people have my cell phone number. I don't answer the phone when a number I don't recognize comes up on caller id, but they sometimes leave messages stating that I have won something, or that I need to call back because there's a problem with my credit card account. Is there any way to block numbers from calling my cell phone? Please don't tell me to change my number. What a hassle! Net 10 should offer some kind of number block or call block feature. Is such a thing available?