Just had mine done at
National Tyre and had a similer experiance.
Booked online for the extra 10% and requested Castrol Edge 0W30 so £33, went along on Monday and they replaced the oil and filter(Unipart), whilst doing this I said to the guy 0W30 he nodded in agreement. When I checked the paperwork at home later it stated Visco 7000 0W40, phoned them back to be told "We only do what the computer tells us to do and they have to use all the old stock up" , can you give me a phone number to ring and complain "NO", phoned the head office four times before I got to talk to somebody and logged a complaint to be told the area manager would ring me.
Still waiting and not happy
