Appalling Service

For the past couple of months I have been having endless problems with MTN regarding my airtime an data bundle. My airtime and data depletes within 2 days of receiving it and when I called the Call Centre after trying for 3 days to get through to them and no answer, finally I get through today and the person on the other line could not assist me and explain why this has happened and then told me they are transferring me to the Technical Dept who will assist me and while transferring me cuts me off and this is after waiting on the line for 25 minutes so I am still in the same situation with no answers. I have no access to anything on my phone and now I cant even make calls because my R350 airtime that I receive every month was depleted in 2 days and I could not even use the phone because I could not get access to anything, how does that happen and then the people in Call Centre who should be qualified to assist with queries cant answer me and tell me what is going on. I have been an MTN customer for 8years now and this is first time I am experiencing such appalling service. Very disappointed especially when I am paying so much money for my contract which I will be cancelling.