Barclays Relationship Manager interview questions

The process was unbearably long and I was left uninformed the entire process which took over 4months. I had 2 face to face interviews, 1 online video call and numerous unneccesary calls afterwards. I was advised I was the strongest and now only candidate. My work visa was applied and approved & then I got rudely rejected by some automated email from HR. Thinking everything was ok (as everything had excelled well), I emailed my contact at Barclays who denied the rejection "just ignore it". The next day she called me and said "we didnt get head count approval, sorry".