A serious answer, also it may just be funny to continue the "bad" jokes.
You are obviously under attack of someone who has your mobile number. Wit a simple programme, sms mail bomber, this can be acchieved in seconds, even send over the net.
Read here a description of the functionallity:
Text messaging in LogoManager
As well as being able to send normal text messages, LogoManager enables some advanced features not normally available from the handset menus. All of the below features are network dependent and also depend on the capabilities of the receiving handset.
Newsflash - when it arrives, the message will display on the screen immediately instead of arriving in the inbox.
BTW...this LogoManager is a perfectly legal programme and is used by companies to send ads (spam) to mobiles...
Only your provider may be able to help as you need to find the senders number.