I think there is a 3year cut-off point. Was in the same bind last year when we bought our car. We bought it used from a BMW dealer and paid £12k for it. I went into the bank the day before we were going to pick it up thought best to mention there was going to be a 12 grand debit card transaction at said dealership. After much faffing they finally got the picture and allowed me to spend my own money!
so, went to pick the car up, were a little surprised when I told them how I wanted to pay. Turns out their card machine was down due to IT servicing and would we mind going over the way to the mini garage to do it there? So, card went through first time and drove off, happy days.
checked my account tuesday (picked it up on saturday), money was still there, was surprised. checked it the following monday, still there. check it 3 months later! still there! was a day away from transferring it to my savings account (for safe keeping of course) when it was taken. 14 weeks later. shit.