MTN IS HORRIBLE

I Upgraded on your Sky package yesterday. After the upgrade the voice and data has stopped working. Your call center says it can take 48 hours to resolve. Guys it is the 21st century, we use our phones for everything, including my business. Now I can not receive or make calls, do banking or receive and make SMS's for more than 48 hours.

Please sort your mistakes out? And then the customer service cannot do anything other than log tickets. shocking service