Late debit order

I took up a contract with Vodacom in march n I've been unhappy since. I get paid on the 20th but my debit order goes through on the 24th and I have called so many times to request my debit order to be moved to the 20th but its not happening. This is such an inconvenience really and when I wanted to cancel my debit order n pay cash I'm told that I can't because my contract has to be at least 12 months old.<br> <br> I'm really unhappy with Vodacom I can't wait to finish this contract and believe you me I will not be renewing it!!