Two debit on my account for Faulty Devices

I bought a device from dotfnb hydepark on the 22nd of October and had to returned it due to faulty on the 26th of October. They replaced it with a new one but still had faulty. I was forced to return it again on the 31st October to Dotfnb Eastgate and instructed them to cancel my contract as i was no longer interested in the devices. Two days later, I called the manager at Dotfnb hyde park to enquire if the contract was cancelled and she repeatedly said yes despite me informing her that the accounts still appears on my online banking.<br> <br> Now, this morning my account has been debited twice with an amount of R219 X 2 for the devices I do not own. What kind of service is that? I am not asking for too much but my money back and cancel the contract because it seems it was never cancelled. <br> <br> I hate tio find myself talking to the bank omdusman about the services I have received. I feel treated unfairly by both branches.