any one bought a defective car

Hola     one and all I am thinking about joining the name and shame group    

I bought a car from Specialist vehicles  two weeks later the engine blew up     then they would not respond to my

pleas for help    I was without transport for six weeks      so put the facts on Facebook    only to find  that friends of the owner

had put remarks on the page 

So does anyone have advice  (I lost €2,800 as an O.A.P  on state pension this is a vast amount of money)