Please collect ur device & stop debiting my accountt

I received a call from this company for a contract & I accepted as I don't know to much about, when the phoned my wife google the device & discovered that the contract outways the cost of the device by far. We called & canceled the contract immediately & requested them to collect the device of which they have not. They continue to debit my account after cancelation & numerous calls..They also listed me on the credit bureau as a non payer as I called me bank to stop the debit order. They have started debiting my account again...I will also be in contact with the customer protection department to get all my money back. Please don't have any dealings with this company