bad service and false advertising

I recently changed my network from telkom to mtn ,,then on Mon 8th ,i went too 3 different branches in pietermaritzburg want to sign up for the two in one deal in the picture ,,which is in their Jan 2018 booklet (59page) All 3 branches say they have not received any stock at all this month(ZTEblade-ZTEA310) which is false advertising .I then phoned the call centre ********** 667 who confirmed that no stock,,but gave me ********** 000 to phone and i must ask for marketing which i did on the 10th(waited 11 mins) i was told that the regional manager will phone me that day(still waiting for the call) ,Today the 12th at 9.58am i phoned ********** 000 number again and waited 8 mins, then i was told that they off line and will phone back ,,nix, they answered me saying sorry but didn't solve the problem,,even on hello peter they answered but still I not received not one call ,,now going to report them to ombudsman..