Windscreen replacement

I logged a claim at First for Women so that I can have my windscreen repaired. They agreed but requested me send a warranty which stipulate that the car must be repaired with the original Audi windscreen. They later informed me that they cannot replace the original windscreen which has a sensor but will replace it with the cheaper one which cost R3500. I didn't agree with what they were offering me because their policy documents doesn't state that they must replace the windscreen with any glass. I am totally disappointed at their service because when the car left the dealership they insured it will original parts.