Debited for a device not installed

Call Centre agent sold this \wonderful"device on the phone and I specifically said that I cannot confirm and that payment can only be deducted once I have confirmed that I will be going ahead with the installation of the device. They pushed me into settin installation dates although on numerous times I told them that this is not confirmed. They push you to give your details so that they can give you a quote and tracking number. When I eventually told them after considering not to go ahead they threatened me with cancellation charges that was never confirmed to me as I never agreed to go ahead with the installation. They deducted money from my account last month and I called them to say they need to reverse it and had to ask my bank eventually to reverse the money. Today again they deducted money from my account. I was told by 2 agents that they will listen to the telephone conversations and it is now a month later and no feedback. I want all me details removed from theit database and I have asked them to do that but it seems that they ignore you so that they can deduct money from your account for no device installed. """