no delivery of contract bundles!!

i have not received my contract bundles for two months in a row now! it looks like the only way i can get mtn to do anything is by complaining on this site i keep phoning the call center and keep getting reference numbers (ref no. ***) but it looks like that doesn't do any help! i am disgusted with this service and will never recommend Mtn to anybody in fact i wish i did not take out this contract at all!! they charged me R524.66 last month and i am only supposed to pay R399 pm for 100 mins data, 500gb data and 200 sms i am on top so there is no way to over charge me. last month i received only the 100 mins airtime and keep having to load data bundles which is now beginning to cost me a fortune! do you think they will refund me the extra money i am spending every month?? this just leaves me disgusted and disappointed with this useless service! i suggest others not to use this terrible service provider! it will take a miracle to make me change my mind and opinion about Mtn.