VODACOM CAN'T PORT A NUMBER

I entered into a contract with Vodacom on 11 June. It took them 18 days to send the phone but somehow messed up the porting process. As such, in early July I had to return the phone (lost a screen guard because of this) in order for them to send me a new phone (exact same make as previous). This was received on 12 July. My number has still not been ported, the agent who I have been working with has advised that due to protests he can't assist me and I must contact customer care. Customer care can't assist me and put through a call back request to the agent.

I am now sitting with a contract which I can't use and it has been a 2 cellphones within a month and 8 days since I entered into this contract.