Poor Marketing & Use of Info *******ly

I recently bought my husband a gift from The Pro Shop, and when I was asked to provide my cell number, I asked why and I was told it was for tracking my sales if needed. I gave it to them but categorically told them it could NOT be used for marketing purposes to which the sales person said it would not. I have now tried to Opt Out 4 times from their SPAM, I have emailed them telling them to remove my details and I have had a) no response, and b) I am still receiving (despite the Opt Out) SPAM. This has left me with such an unfavourable view of this business.