Zero Customer Service - Mtn

In January i did an upgrade through the MTN retention department Contract was confirmed verbally and via email with the consultant. I was assured that i would receive the agreed on package with minutes and data. The data and minutes that i received in March was not was i agreed on. I have been trying to speak to MTN since the 12 March and keep being promised that the retentions department will correct it as i completed the contract with them. I have called numerous times and hold for 20 minutes and more without the call being answered. I have emailed the customer care department and they advise that retentions will contact me. Today i was told that it takes up to 72 hours to get a call back. And the consultant advised that i must just keep holding on as the retentions department is busy. That must be because they have so many dissatisfied customers This a complete lack of customer service as not one person has even tried to me assist me It is completely ridiculous that MTN can not take the time to resolve a simple issue as correct data allocation It has been more then 2 weeks without any signs of help MTN has not provided and any kind of customer service and leaves me with only one choice and that is to cancel