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I have upgraded a contract with MTN on the 6/02/2015. The consultant confirmed that the data and airtime will be effective immediately and that the existing airtime will no longer apply. Upon monitoring my airtime, i noticed that it was being used on data. From Friday to Monday, R20 was used on data. After waiting about 1 and half hours at MTN Gateway on the 9/02/2015 i was told that the data was not loaded and that it would be loaded in 2 days. How this becomes my problem with my airtime still being used is mind boggling.On 10/02/2015 i received an sms to say i have been transferred to the new package. The data given was much less than what i signed up for and my airtime was still down. The phone did however work and data was being used were necessary.From 11/02/2015 to 13/02/2015 i have lost network coverage every single day. Yesterday and today was the worst, as i was unable to use my phone for a prolonged period.I am now sitting with a sim thats apparently not registered, unable to make and received calls. I cannot keep running to the MTN store. I have complained to the customer care (via email) and MTN SA (via facebook message) on Tuesday (10/02/2015).I still await a response!