Crediting and Upgrade - No service

Still no credit on my account as assured by Telkom. I have been paying for a 10megabyte adsl line since 2012 and barely made 3.5 megabyte speed. Due to all this hassle and poor support from technical support and accounts department i agreed to the upgrade Telkom sold to me on 2015/01/27.<br> I received my reference number via sms as confirmation *** for the new contract. It has been 3 months now and the technicians still haven't come out for the upgrade. I have made attempts on a weekly basis to communicate with telkom. Still no results or solutions. Telkom continues to bill me for my old contract which i now refuse to pay due to no service and use of the line. As the country's biggest telecom service provider i expect communication between departments, which sadly is non existent admitted by the various departments of Telkom. No wonder nobody knows what the hell is going on. I demand full credit on my account with interest and an immediate solution to the upgrade sold to me.