Shocking Service Delivery all round

I sent a number of emails to cancel all the 3G ****les which had expired. This request was never finalised. Received incorrect billing as a result. Email from MTN non-existing. Follow-up three times before I received a half hearted reply. I had to go to MTN head office to have my request finalised. This took three hours of my time to do so. Billing is still incorrect. While at MTN got a dual sim for one number. Two weeks later, this has still not been activated. Been on hold to the call centre for 20 minutes now. I am totally shocked at MTN's service and will move to the competitor as soon as all the contacts have expired.