Citizens advice have told me that the fact my Bil picked up the car is irrelevant?

I have just arranged for an independent inspection and report to be done on my car which is taking place this afternoon. in the hope that this will strengthen my case against them!

Thanks for the advice so far. I have drafted my letter which I am going to send recorded delivery. Should I email a copy to them also?

I do have the v5c but it is in the owners name who sold it to the used dealer. It's blank also, they didn't sign it. I haven't sent it off as yet as I've been trying to reject the car since day 2.

I forgot to mention that they advertised a full 12 month MOT but the MOT i have expires Feb 2016

Hi, I am in desperate need of help! ill start from the beginning. On August 31st i went to a used dealer to look at some cars as mine broke down. I spotted a car and phoned my brother in law for his opinion. My brother in law informed me that his friend actually works at this place so he will be able to get me some money off so to leave it with him and he will pick the car up for me tomorrow. My brother in law phoned me the next day and said he can get me the car for £2000 (original price was £2595) I asked him was it all in working order and drives ok? he said yes. I sent him the money (Bank transfer) and he purchased the car for me. The next day I heard a grinding coming from the engine and the ABS and Traction control warning light illuminated. I then spent 15 mins in a car park as the car would not start, i kept getting a car with a wrench warning light. There was no sound from the engine when the key was turned. This has happened on a number of occasion and i have as of today had the car for 9 days. On day 2 i phoned the dealer and told him i am not happy with everything and would like to reject the car and have a full refund. he told me that as £600 was knocked off this was a trade deal so i have no rights to a refund. He then said i would need to speak to his partner. On day 4 i went to the dealers and spoke to the partner who said i did not buy the car from them. he stated the car was sold to my brother in law and its nothing to do with them who he sold it on to. In the end i agreed to pass them the car back as they requested while they fixed the problems. they said the car was throwing out a code about the camshaft sensor so they re programmed the key which solved all issues. I got the car back yesterday and every issue i reported is still there, the car did come back with a nice big scratch on the rear bumper. I phone the dealer again today to be told that there is no problem with the car and i would not be getting a refund. When i said you leave me no option but to take the legal route he said i dont have a leg to stand on as i dont have a receipt. (all that was given to my brother in law was a card payment receipt) however i do have a printed copy of the advert from their website. Please help me get my £2000 back!!! if you need any further details let me know. Thanks