Rio Tinto Control System Engineer interview questions

I passed the phone screening and then they invited me for an onsite interview at Boron plant. After one week they said they are interested to hire me for a different position (Electrical Engineer) and I will get an offer letter in one week. After that, I don't know what happened but they took like one and half month deciding the salary for my position and I never heard back from them after that. Overall It was a very awful experience working with the hiring team and managers.