disgusting account handling

Dear Peter<br> <br> i am utterly disgusted at the way MTN is handling my account. I Have never owed them a single cent since i opened a contract account with them but everytime i get an upgrade, my services keep being blocked for what they say \i've exceeded my account limit"Their customer care line is the most horrible thing i've had to deal with in my life and if i didnt deserve the upgrade they shouldnt have given it to me in the first place. i am irritated by the way i have to keep calling them all the time to reconnect my services as if i owe them when i dont and this has happened to me twice this month.<br> <br> """