Old Mutual / iWyze don't make good on their promises

This is my second query regarding this issue. In February I complained about the fact that I keep getting marketing sms's from iWyze for a quotation even though I already have a policy with them. The response I've received is that the Marketing Department will be instructed to remove my details from their database. Their promises is no good, as I still receives sms's for a quotation.