MTN's Billing on their customers is **** PERIOD...

This is my second complaint on this site about that same issue, so the last time i complained about my airtime vanishing into thin air MTN responded and said its the applications running but guess what i always delete the running applications but the air still vanishes...i loaded R10 yesterday and yes i had deleted the running applications but it vanished than i loaded R10 today in the morning around 11 and it vanished again, i than loaded R15 at 17:20mp and it still vanished so tell me if its still the applications running and eating airtime. The MTN service is horrible and bad news, i regret using the network and take up contracts with you guys because clearly you don't care about your customers yet we stayed loyal you. I know nothing will be done with this but i just wanted to bring it to your attention that i as your customer of more than 15 years, i'm disappointed with the service i'm getting from MTN but its not like you guys care anyway......