Incorrect Billing

I received a statement from Autopage for a payment of R1703.64. I noticed that I was billed for MMS usage on sites that has never been used. I looked at my previous bills where my average payment is round about R500p/m and noticed that these MMS charges started at the end of November even before I received my upgrade.I contacted their offices 4 times today between 16h25 and 16h35 to query this but when I get through to the call centre the calls gets cut. I'd like someone from their offices to contact me and provide me with an explaination and resolution as these sites were clearly not used and want this to be written off. The fact that only 3 sites reflect continuously and at odd times of the morning also makes this suspicious!!!<br> <br>