Hireit Lawnit Pretoria

Took my generator in for repairs,paid,got home and tested it properly.It was not repaired at all.Only got a new spark plug.I paid for repairs ,decarbonising and full carburettor strip and clean.None of this is true.I have photos to prove it.I took it back but doubt that any of them are qualified repairers.Could you plse help and make sure i get my generator back in one piece.