Rubbish after sales

Purchased a Golf sight unseen.
On the day of collection I test drove the car before completeing the paperwork, but I noticed straight away the car had not been valeted properly to be honest it was dirty and the flip tray in the centre console was broken.
They had a week to prep the car for me, so straight away we got off on a bad foot.
The sales guy said after sales would arrange to come out to my place of work to do the repair.
On the Monday I received and email asking when would be convenient I responded straight away, however I then had to wait a further 4 days and three phone calls before it was arranged to do the repair and surprise surprise they had to take the car back to Derby so using my fuel.
I was not impresse. I asked for the after sales manager to call me.
It was arranged they would collect my car at 10am return it by 4pm and leave me a car.
They didn’t collect my car until 12.30 (I recd email 5 mins before arrival saying they would be late) they left me a car but no keys because they couldn’t insure me. My car arrived back at 5.10 I finish work at 5pm so I’m left hanging around.
I’ve made at least 15 calls and 6 calls specifically asking to speak to the sales manager and he never returns a call.
I spoke to after sales and you ask why there are problems and they just say I’m sorry you feel like that, or I can only apologise there is no clear communication between department no continuity in what they say.
Once they have taken your money they do not back up what they promise.
I would say DO NOT BUY FROM PARKWAY.
If you do buy from Parkway I hope you do not have to deal with after sales they are rubbish and never admit a fault is down to their lack of service or care and you will never get to speak to the after sales manager.I tried again this morning and again was assured he would call be back with 2 hours it’s now over 3 and still no response.
If you get rubbish service you can complain to The FCA and I suggest you do.
Each complaint is logged against them and the at any point they can go in and investigate what they are doing.