I've got a San fransisco aka ZTE Blade. Recently my smartphone has started to receive textmessages over and over again from my friend. At least 2 textmessages a hour, but my friend doesn't send them at all. I started receive textmessages since yesterday. It are always the same messages my friend has sent me the last 2 days. But in a random order and at a random moment. It's irritating the crap out of me. I even receive them at night.
Could anyone help me?

Are they messages like advertisements? If so, It's probably actually your friends fault.

Never mind it has stopped. But it were the same messages my friend had sent me the past few day. Like if He sent me" Hi how are you", My smartphone would receive it like 25 during that same day, but at different times.