New tyres and wheel alignment - car doesn't drive straight

[Cuppa]

I think you should expect your money back . If it were me I would be making that firmly but politely clear to whoever is in charge & telling them that both a) it was fine before they adjusted it & b) you will be taking it to a specialist wheel alignment place to rectify what they have done. If they suggest having another go I would refuse on the basis that they had plenty of opportunity to get it right & told you they could do no more. Any further attempt will just be more of the same.

Actually I think that the people who told you your well handling vehicle needed a wheel alignment & then turned it into an ill handling vehicle should be responsible for the cost of getting it rectified elsewhere, but that might be a harder road to follow.