Digusted with pertatic service rended mtn useless

I got a message advising me that if i charge with R65 airtime within 7 days i will get 1000mb data free valid for 7 days. So i recharged and didnt get the data. I called 135 and a lady tol me to switch my phone off and on as she would load....this never happen so i called back and a guy said its takes 2 to 24 hours and i should wait ....this never happen then i called again a a guy said i should log a call which will take 24 hours to resolve...this never happen so i called again and was tild that my complaint can take 24 to 72 hours ...again nothing happen. I recharged on the 31 august 2018 and until now 11 september still waiting for a call or message nothing happen and then on friday 7 th september mtn sends me the same message promting the offer buy 65 airtime get 1000mb data free digusting and misleading