You struggle for ever to change your contract at the end of 24 months to a pay-as-you-go

This is my second complaint to HelloPeter and still Vodacom cannot resolve it. I waited 24 months to CANCEL my contract with them - i phoned them 2 months before the end of the contract. I wanted to change to a pay-as-you-go. Their retention/cancellation agent convince me to rather change to a contract where I pay a fix rate of R150 for some call and data time. I agreed with this. Ever since then I struggle with Vodacom to get it as they promised or better then CHANGE THE CONTRACT to a pay-as-you-go and i will buy airtime, data as and when needed! I am paying now for a handset (R210.53), which I NEVER signed or agreed upon and never received! Then I paid for a Smart top-up S line rental for R286,09. It is unbelievable that Vodacom operate like that!! If the cannot honor their commitment of R150 then cancel this ASAP!