I had an issue with a car seat I purchased at the end of January, took it back to the store who agreed there was a fault so took it from the car. Told me they agreed there was a fault and were happy to exchange it but they didn't have any of the seats I had in stock, they didn't have many seats in stock tbh - words of the woman assisting me. The car seat I returned is currently on sale for £180 in their store, I payed £130 in a 'deal of the day'. The only car seats they had were own brand ones which were £50 or another brand which was £170. I don't like the own brand ones (poor crash tests) so was told I would have to pay the £40 difference as they didn't know when they would be getting more stock of my car seat. I need a car seat and felt I had no choice, but surely it was returned for a safety fault I shouldn't be penalised for their lack of stock? Should I just suck it up or ring and complain wanting the £40 back as a gesture of good will considering it could of been fatal to my son if there was an accident? Or should I be contacting the manufacturer direct to complain?