Unauthorized debit order date

The people choose when they debit my account, a representative came to me and an arrangement was done- why debit o incorrect date? I want my money reversed and no stories. Debt collectors tend to assume that of your indebt then you don’t have any rights. The representative didn’t even tell me that they will be locking my debit order-dude I can close the account and then what- make an arrangement with the company i owe and then what?? When all this started they debitted me incorrectly and they have been doing so causing me to have reversal charges!!!