Damaged Forks on Giant Tough Road 2
A quick google suggest this bike is fitted with composite forks. I would follow the shops advice and replace them. In composite forks damage can be more substantial than is immediately obvious and fork failure could produce a horrible crash. 

If the wait is too long for an exact replacement then there are after market alternatives (such as as exotic carbon forks or planet-x/on-one forks). The key dimensions to match are the steerer size (probably tapered), axle to crown measurement (measure between the underside of the crown bearing race and the centre of the axle) and the wheel attachment mechanism (quick release, through axle etc).

Even if longer term you wanted the 'correct' fork an after market item would allow you to use the bike until the oem item can be obtained.

Note the forks mentioned are available in the UK market, if you are none UK then these might not be an option for you.