MTN renwal, blocks active services, non disclosure

I had the displeasure of upgrading my contracts (did not need to as was 2 years over) Company account 2 voice 1 data line. We were advised of new contract, which we signed. we did not take a "free phone" option either I was clear. On the upgrade ALL my current services need to remain. Roaming, Calling etc etc I was assured nothing would change.

Month later i send MMS and get message "dont have airtime" odd since never had this and was assured nothing would change

Then i was working the other day and life threatneing event had to make international call for work. I get "you do not have enough airtime" Hence i could not make the call and this cost my company MASSIVELY in losses.

I go to MTN branch, 6th Ave Walmer and am told no i have to have airtime to call out the country. HA? its Post paid contract, and was assured nothing changes when i sign. Then am told the "credit limit" was set to ZERO again credit limit? never had this was post billed case i travel internationally.

How does MTN give me internationa calling and roaming BUT not allow this as the system does not allow it. I am then asked to write a letter to extend calling limit by MTNsp store. then told by MTN they cant do it. SERIOUSLY DOES ANYTONE AT MTN KNOW WHAT THEY DOING. RIGHT HAND DOES NOT KNOW THERE IS A LEFT HAND.

1. MTN failed to disclose these changes to my account PRIOR. I renewed with the provision that NOTHING WOULD CHANGE ON THE SERVICES. 2. mtn fails to accept responsibility

I now have to post here becuase MTNsp Store blames MTN and MTN blames the store refering me back (@Ighshaan Adakarie mtn) No one has the ***** to sort this out and explain themselves why this happened let alone fix it.