Bad spares people must stop using it.

Pathetic useless spares, I bought a second hand car cylinder head and I fitted on my car and it was bad than mine so I took it back to their shop for exchange, now they did not have the replacement part so the owner promised to refund me. Is now two months the owner does not want to refund me telling me that he's gonna refund me but he keeps telling lies after lies.. Bad service at all.more than five people have the same complaints as mine.