Bad WeBuyCars

Not good service...no after sale service either. Did not get a discount voucher for car to go through roadworthy...was told by Dekra head office that webuycars gives discount voucher for roadworthy. Told by salesman Dekra report was done 15 October as he could not find one on system. Next day saleman told me dekra report says dents normal scratches, boot spoiler loose, tyre wear on al tyres including spare. But when I got the car - Bootspoiler was gone Speedo did not work Manager at webuycars sent me a dekra report and I saw date on it 25 sept this year. But remember salesman said 15 Oct no dekra for car and took car for one? So how come all of a sudden one comes up with date 25 Sept? Took car for a good check. Starter had to be serviced. New speedo pick up sensor had to be installed. Bad earth connection on car had to be fixed. Two front lower control arms had to be fixed. Something like a loose plate sound somewhere on one side of car. Two different workshops inspected the car. All these things costs money. Only two tyres have wear. My questions: How does Dekra do a condition report that they do not see these things? If any person look on webuycars website and click on any car, you can view the Dekra report and it tells stuff like : oil leak, shocks defected, speedo defected, bonnet release defected, gearbox noisy and many more. Why was all faults on the car I bought not on the report? Webuycars had the car as a Class A meaning very good condition and low mileage. They clearly must base this on something but what? But did I paid too much for the car as webuycars pride themselves by saying they sell cars at a certain price with faults in mind...this is.the problem? On what did they base the price if Dekra was not correct? Auto elec, Chery, rmi work shop says that if dekra was done by webuycars 25 Sept and I bought 16 Oct - how is it possible for these faults on car to only appear then? So what is real kilometres on car? Why was webuycars not prepared to give me contact details of previous owner as I also wanted to find out about when car was serviced as I saw a battery put in car March this year? Salesman said he will contact owner to find out bit had no reply after asking few times. Not good experience with webuycars. Now I struggle to get car roadworthy after already spending lots of money.