Somebody is not doing their work

I phone Autopage on 24/06/2015 to notify them that I want to cancel my contract wich should end 30/08/2015. The end of August I recieved another bill for this account. I went to the store in Paarl on 02/09/2015, they confirmed that I cancelled the contract on 24/06/2015 according to the notes on the system, but I needed to come into the store and give a written letter to cancel it. Noby notify me about this procedure, according to me my contract was canceled on the 24/06/2015. Then I wrote the letter to cancel my contract and decided to make peace with the R486.84 they took from my credit card for September. This morning 30/09/2015 another R471.18 was deducted from my credit card for this account. I phoned the Paarl Shop and Celeste directed me to the accounts department ***. I tried to explain to the lady that there were 2 deductions of my credit card that was not suppose to happen, if the person I spoke to on 24/06/2015 gave me the right information. I do feel that Autpage should give me my money back for the last 2 months because one of their agents did not give the right information.