What do I have to do to stop you sending me ludicrous sms's????

BetterBond I have been receiving sms's from yourselves for untold months now, either stating that "my application has been submitted to the banks, and a personal consultant will keep me posted" or as a valued BetterBond customer I could qualify for a personal loan, or some other cr*p. I have tried innumerable times to tell your customer care that I am not a client of BetterBond , and each time I am assured that I will be removed from the data base, I obviously haven't. Just to make it absolutely clear, I am not a client of BetterBond, nor have I ever been, nor do I want to be.