REFUND

I sent in my handset for repairs and it took vodacom alomost 26 days to replace me with a new device , since the old one could not be repaired as it went between repair centres for three weeks .i called the customer care for a refund for the period i did not have the device , yet i paid full subscription value for the month .I was told by the agent , that should that happen , then i would have to extend my contract an additional month as i needed to see out the full 24 month contract .Point of note is that i did not have the use and benefits of the device , so why should i still be paying for that month , i await a response