Incorrect billing

Since getting my upgrades about 3 months ago I have been incorrectly billed every month and I always have to go in to the shop to get it sorted out. I am highly disappointed in mtn as they have soft locked me. I have queries on the account which no one has gotten back to me about. How can you soft lock someone without a warning or when they have outstanding queries. Since the strike I find it difficult to get through to customer services. My account is suppose to be on a debit order because I only get paid at the end of the month, but i am now soft locked. I don't know who gets paid on the 22nd of a month but I certainly do not this is absolutely ridiculous. <br> <br> What is going on with you people?