Stop spamming me

The last time I made a purchase at The Pro Shop, the lady at the till asked for my phone number. I told her I would only give it to her if she made sure I was not on any mailing lists. She showed me that she had removed me from the mailing list on her computer. Why, oh why, do you then persist in spamming me? I have opted out of your spam sms messages numerous times and still they continue to come. What is wrong with your systems? Remove me immediately. I will shop elsewhere from now on