Their Dekra reposts are a ****

I am very shocked and disappointed in WeBuyCars!! I am now convinced that their Dekra reports are a **** and you dont know what you are buying like they advertise. I bought a car from them and when I took it for roadworthy I discovered that the engine has been changed. This was not on the Dekra report and they also have not told me this before I bought. I had to do a police clearance in order to do the licensing. This could have been a very bad situation if that was a ****** engine. I have also sent them an email and no one bothered to reply.