Head light been repaired

Friend bought a BMW used approved car from them and did not know until I took car that the headlight was taking on water. Took to another dealer in Durban who stripped the light and found that the light had been repaired. Northcliff Auto BMW. would not entertain assisting in replacement of head light. Will never recommend them to anyone. Did not even on purchase of car extend motor plan as agreed only done 6 months later.Pathetic