I have never been in this place but somehow they m...

I have never been in this place but somehow they managed to get hold of my mobile phone number and they have been harrassing me with text messages for nearly 18 months with deals. I have contacted them and asked them to stop, I got no reply. I reply to the telelphone number stated in the text message with the word STOP, they don't stop and each and every message has a different number for me to text stop to. I now refuse to set foot in this place and going on what I have heard from people I know I am not going to miss anything special. Disgraceful service without even setting foot in the place.