Bad service no care for consumer Rights

I have logged a complaint as my account was suppose to be paid and it had not been closed I was still billed and I was charged for a insurance that was not suppose to be charged for after complaining they credited my money to an Mtn account that was paid up and closed were is the justice in that I have giving them a week to respond and I've been ignored on my emails I would like to know when will they close my account and also refund me for the insurance I was not suppose to be paid and how will Mtn compensate me for a bad credit rating that the my have cause and damaged my scoring were is the justice in this as this has affected my in a personal capacity and stopped me from getting other credit in my name because of their mess up! when you call the person who replies to the complaints she tells the people to say she isn't there and to get the details she will call them back after the person has put me on mute!!! What kind of customer service is this at Mtn.