Data Over Charge / Theft

This is the 2nd month that I've been over charged for Data (around R1,000 each month!) & it's not possible! I'm in WiFi at work & at home, & my cellular settings are set so strictly for when I'm not in WiFi. I've contacted the various customer service areas & just get sent back & forth. I've received the URL reports which show websites being accessed at crazy hours (including when I'm asleep & in WiFi at home). I've been through each line in detail & it makes no sense whatsoever & no one will help! If I pay my account & exclude the data portion that I'm querying (& they are aware that I'm querying it) they suspend my account, so I'm left with no choice to just throw money at something I know is completely wrong! I've been a customer of MTN for over 6 years - have never missed a payment or queried anything - & now I'm left with my hands tied & no assistance when I know there is an error - where is the customer support? Where is the respect for customer loyalty? Where is the honesty? MTN really needs to come to the party & support here once & for all! I want my money back! I'm an honest customer & I know the charges are wrong! \Everywhere you go"- how about you go to me & help me!"""