Line Suspended

I've been calling the call center for the past 5 days now to no success. the last time I called I was holding for 40 minutes. I cannot understand why there's a call center in place if no calls are picked up. I even sent an email and logged a compliant on their website which I was told they'll take 5 days to respond to. five days really???!!!. I just need a line reactivated and debit order details changed.... How difficult is that !!!! I should have never gone back to MTN.