Number disconnected instead of convertion to prepa

On 9 March 2015, i gave an instruction to cancel contract with an instruction to convert my number to prepaid. This instruction was confirmed telephonically as well in response to all the annoying phone calls seeking an upgrade. upon cancellation of the contract on 28 April 2015, my number was disconnected instead of transferred to prepaid. in the time between then and now, i have had to call Autopage at least 10 times asking to have my number re-instated, to which i am still waiting now. Ths is the worst service i have ever received with their call centre agents passing the buck in terms of assisting me from one person to the other. As a result i am missing out on crucial telephone calls even though from my side i have jumped each and every hoop they have placed in front of me