Taking money, yet no service is received

I have numerous contracts with MTN, (I think 7) and the service I have received of late, is rediculous. Being billed R234 per month for Recurring 200 anytime minutes - which was fine. However, since my upgrade 2 months ago, I haven't received this - yet you have continued to bill me for this. I've reported this twice - queries logged each time. Been into your branch - query logged again. It's now a full week late - with no response, no free minutes. So now either my account needs to be credited with R468 or I expect 400 minutes loaded to my number (without a 30 day expiry)????? My last upgrade as well, 20 GB data with each upgrade - didn't receive that either. Come on MTN - get it together.