I went to quickfit 20 odd years ago when they advertised Oil & Filter for any car under 3.0 litres for only £4.99.
Wasn't rich then so off I go with my 2.8 Isuzu Trooper.
Oil & filter please says I.
OK put it on the ramp. Did that and spotty youth drops oil and removes filter.
Ages later with not a lot happening the Manager comes over and says we can't 'do' my car as he doesn't have a filter and it will cost £15 from the Isuzu Dealer.
Yep, I know that, that's why I'm here!
You don't understand sir, I don't have a filter in stock.
Get one says I, and pointed out their Ad in the papers.
Ping pong for a while.
Ended up with old filter back on and a refill of oil and he wanted paid!
I didn't pay and had to call a couple of mates to help get the car 'released'. No mobile phones then either!
I complained to their HQ but got nowhere.
That scenarion would be a bit different nowadays but I've never been back to them or any of their Group Companies and never will.
Tom Farmer eat your heart out