Most Terrible Network (MTN)

I am a MTN customer for many years. Never missed one single payment. I had 3 contracts on my name without any problems. I upgraded the one contract at the Mimosa Branch (Bloemfontein) on 28/08/2015. My problems started just after that. A few days after the upgrade my phone was suspended (for no reason at all). It was a struggle with a non existing and *********** Customer service to get it working again. I upgraded the other contract on 19/09/2015. All my contracts were suspended again. I spend 2 days to try and sort out the problem. I even cancelled the third contract in an attempt to solve the problem. The only answer that I could get out of MTN is something about a credit limit. But I never used more than the credit limit. I asked them to change or delete the credit limit and they promised to do it but it never happened. Since the upgrade in August my lines was suspended 5 or 6 times without any reason and still no answer or solution from MTN. Every time it took me 2 days to get the lines back and working. What a frustration. The one line is for business purposes. This is unacceptable and poor service. MTN is definitely the MOST TERRIBLE NETWORK