Bad service and lack of fulfilling promotional promises

Planet Fitness Mega Club Rivonia Johannesburg I signed up, was badgered to sign up fast and promised i would get my PUMA voucher if i did. So i did, that was a month ago, i have emailed, called, seen a consultant at Mega Club Rivonia, emailed Planet fitness main office. No replies, i want my voucher. Before i signed up i received daily calls telling me to sign up then when i did, no one cared. I am not happy with this service, on principle i need to be given what i signed up for and what was promise. I even signed off for the voucher...did one of your employees then take it?? Someone needs to contact me because i have been calling and emailing all month. Also the Facebook page wont let me post a review, they are not allowed to block reviews. We are given platforms to communicate on and should be allowed to. Someone needs to assist me now.