A car dealership deducted your deposit TWICE on a car you bought 3 months ago and they just found out about it now they are demanding for their money Do they have a right to legal action?

A car dealership deducted your deposit TWICE on a car you bought 3 months ago and they just found out about it now they are demanding for their money Do they have a right to legal action?
It depends on where you live...In the UK I believe that it is their fault and as such you are not liable for their mistake.