Welcome to Just Commodores, a site specifically designed for all people who share the same passion as yourself.
Now you know where not to buy tyres from in future.
I went there once, for a wheel alignment they pretended to do and I've not spent a cent there since....
50/50 nope they have admitted liabilty so ask them to now pay for the whole repair , take the matter up with their head office , they hate bad press of any kind and will quickly bend over to please the cutomer .