Telephone number *** and ***

I have a fixed contract for number *** to the amount of R359.00 and since the start of this contract 7/04/2015 the monthly billing exceeded the amount of R359.00 while this month it is R1322.53 . As MTN are in breach of contract I wish to return their CAT B100 phone and migrate back to pay as you go .<br> <br> Secondly on phone *** they exceed the monthly R579 .00 as well . This month our account is R912.00 and apparently the amount originates from Nashua Mobile adding a R183.00 migration amount . I had three service providers previously under Nashua Mobile and neither Vodacom or Cell C adds monies to my account due to migration . Furthermore this phone was upgraded on 2015/04/01 under MTN but still they deduct monies on behalf of Nashua . <br> <br> My account gets mailed to me , however without detail of how the account is set up . Upon enquiry through our local branch they cannot access the detail billing and if I request a copy through the Customer Care center I have to pay R25.00 per page