Subscription Suspended after incorrect upgrade

MTN contacted me to do a telephonic upgrade of my contract and my daughter's. A few days later I got a call to confirm the delivery of the 2 handsets. I wanted the champagne gold and the delivery was for a silver and a while phone. I told the person it was the wrong colour and asked her to cancel the delivery. The next thing is that I had no connectivity. I went to an MTN store and was told that my subscription has been cancelled. This status was changed BUT it also showed that I had been upgraded. I can now phone and send sms' but my data is off and I cannot send any whatapp messages. After another trip to an MTN branch and various phone calls I have not been able to sort this out. After 20 years with MTN I feel like changing to another service provider.