Aarons / unauthorized payment!

I rent a sofa, loveseat, tables and lamps from Aarons sales and lease. I admit my payment is late but i always make arrangements for payment within reasonable amount of time. a few months ago I was asked to come into the store and have a copy of my credit card on file for when I called the store i could authorize payments without having to go into the store. I asked specifically... you will not charge my card unless I call to authorize a payment right. I was assured no payments would be processed unless I called in first. Well it just so happens I checked my bank account today and they ran a payment thru that overdrew my checking account. I admit again the payment is late but they had no right to do what they did. Knowing the character of the people that work in that store how do I know they won't now use my card for personal use also! someone please tell me how i should handle this situation???

I feel violated!