Bad Service

I had a vehicle repaired after an accident on 26May2018. The vehicle was collected on 13July2018 but there was a terrible noise coming from the front wheels every time I turn the steering wheel. I reported this to the service provider that was repairing the vehicle and had to take it back for assessment. It turned out that the shocks were damaged during the accident. However, Budget Insurance has instructed the service provider to change the shocks and mounting on side that was damaged only. Why would they fix the shocks the side of an accident only if the damage wasn’t there before the accident? Shouldn’t they repair the front shocks and mountings in the front (both right and left)?