DXC Technology interview questions

I actually sat the interview and this side of the process was actually fine. It is what followed that is my cause for concern. I will try to warn others if they happen upon this company. I passed the interview, was given the role, sent the contract, contract signed and accepted. I was going to hand in my notice as advised by Fixnetix themsevles..... they then rescinded the offer because of a very low quality reason. I will not put the whole story here as it is a long one, but it left me in a very awkward situation at home and in my current role. Fixnetix are backed by large multinationals, so it appears they treat people like nobodies and move on to the next victim. Please be wary of them if you accept on offer, they breached a contract I had signed and didnt inform me of the reason at all. It was only the grace of the agency that I found out....