Lack of customer service and complete incompetence

Absolutely no words can express my disgust at the complete incompetence of MTN. I have an absolutely ridiculous and exorbitant charge for data which I am 100% sure I could never have used as I'm on a top up contract and buy data bundles. All I want is ONE itemised bill for them to provide evidence as to where and when this data was used. And to show how they can justify the charge. The branches are useless and cannot assist you. When you try to contact HQ not one person responds to emails or answers the phone. I've been a loyal customer for a good 15 years, never missed a payment and when I ask you for one tiny ounce of help you are so useless you can't even respond to an email. Won't recommend you to anyone, will tell people to boycott your service. Absolutely dismal.