Getwine failing to remove contact detail from their database despite numerous requests

Some time back I decided I did not want to get messages from Getwine about their specials. Their SMS messages do not have the legally required unsubscribe link, so I asked nicely to be removed. I had a very nice lady tell me that I would be removed. That did not happen. I tried again. No change. Now 10 messages later I am considering taking legal action against them The take away? Don't give them your contact details they won't delete them when you request them to and they don't have an unsubscribe link on their SMS messages