O/T unwanted marketing texts

My phone has been literally bombarded with text messages from loads of different payday loan companies over last few days. Have had about 20 and counting today alone. They are all referring to me as Andrew (not my name) and thanking me for my application!! All from different individual mobile numbers. The blood sucking leeches are doing my head in, dont know how they got my number. Its relentless.

Anyone on here had this issue? Any suggestions? Changing my number is an obvious one!