SMS Day after day month after month

<p>I fixed my car there once Now i am being bombarded with promotional smses i have phoned them several times to please take off my number from thier systam. i doant get a sms for about a week but then it is back to the usial sms every day i have threatend them with a case of harassment but to vail thay just doant care keep on sending smses thay just doant care</p> <p>I do not know what to do any more. how to stop the constant smsing</p> <p>i am geting very frustrated </p>