Ford Tyger valley

I would like to express my disappointment in the dealerships's second hand division, when I bought my VW Tiguan. I was told that the vehicle will go through VW's multi point inspection before handing it to me. The day after I received the vehicle I realised that there was a repair done on the windscreen. I was not happy and requested the windscreen to be replaced because the sales representative told me that they will ensure the car is in 100% shape. The dealership then agreed to replace the windscreen but with generic one. I objected, and said I bought the vehicle with a VW windscreen and expected a VW windscreen. Although they admitted the windscreen needed to be replaced they stood their ground, that it will be a generic windscreen. The last mail I received was middle Dec from Ford Tygervalley and nothing since, I am not happy.... I am expecting my windscreen to be replaced with a original VW part