Dust covers missinf from my car

<p>gooday</p> <p> </p> <p>Booked my VW Polo TSI for a service on 07 March 2017 use my car as normal not check if my Dust covers where put back until I took my car for alignment and saw it was not put back on, on the 04 May 2017 took the car back to VW for the dust covers they tell me that I had hit a bump and the covers were ripped out from under the car but the funny thing is that there is a lip below the front bumper and the lip is intact, if I had hit a bump so hard my front bumper would have come out due to the impact and it did not. they are trying to cover up that they did not put the dust covers back on my car so they making it look like it is fault</p> <p> </p> <p>kind regards </p> <p> </p>