Could my car chassis/frame be twisted?

A tractor hit my drivers side, smashed mirror,damage to front wing and door, cut through my alloy wheel and since having it repaired it doesn't drive the same....I keep having my car lined up as it just doesn't seem to hold the road and tends to wobble/rock like its in the wind. Have had new tyres as keep wearing . Happened about 2 years ago but dont drive it on motorway much so thought it was ok after being repaired. If chassis is bent could i still claim from my old insurance comp or is it too late. It hasnt been in any other accident so they should know not a new complaint when they inspect it........HELP