Will not choose Cmore in future

It can best reflect whether the service is good or not when in bad situation. I carelessly damaged the left front bumper when reversing to a parking lot in the first day and immediately returned the car to the hire company. In the last day before I left, I actually expect that I need to pay some (although the booking contract says collision damage waiver), but I cannot get their genuine reply about the part I need to pay. The guy who dealt with me face-to-face and his boss whom I talked over the phone are asking for different cost (I can see that they just want to show the big number and then easier to charge me higher, but even they themselves are not aligned on one number). They listed down many items (total $50,000THB) and even included 14days "sunk cost" at $10,000THB (cannot use when in repair). To me, this is not a reasonable charge and they were just trying to get most from me.