MTN Breach of contract

It looks as if MTN is always breaching contracts, I signed up for the A20 and was supposed to get 1GB data anytime and 1 GB nigttime, 100 minutes, 100 sms and 25 mtn to mtn. I have been given 350mb and 50 mins and 50 sms on the old Made for Me S contract and now fighting with them for over a week to get is sorted out and they keep telling me it is provisioned correctly. I will never sign another MTN contract again and also want to cancel mine. There service is shocking. There made for me S contract changed in June but no one can figure this out. False advertising and a breach of contract. Ive now been told that my query has been resolved but it hasnt. And then I wait 3 days for a reply on email and get the same stupid answer back. They cannot understand that their own contracts have changed. I want rid of this contract ASAP. my ref no 1 ***. Called MTN 3 x. Emailed numerous times without any conclusive answer or my data / airtime credited accordingly