VERY RUDE AND HARRASSMENT

I have been receiving sms messages on my Cellphone saying that my gym account is in arrears and i have never had an account with this company ever so i called in and spoke to several people, i even spoke to managers at the head office who promised to remove my number after verifying that indeed they have the wrong number but i continue to be harassed by these sms messages so i called in and spoke to SNE who is very rude shouting at me and refusing to give me the owner or managers contact numbers and then bangs the phone down and when i phone back they don't answer. i want Clinton to call me now !!