CloudDefense Software Development Engineer interview questions

I applied through wellfound. My Resume got selected and the first round was a technical discussion. After that second round it was another technical. Questions were from SQL, Spring Security, Security, Java. Overall interview experience was fine. I got the offer. Initially they said they will open a new office in Bangalore in the year end till then you can work remotely. Based on that I was ready to join them. I resigned from my current company which is one of the best companies. Now 4 days before joining they suddenly changed their plan and asking me to relocate to Gurgaon and if I can not relocate they will simply rollback my offer letter. There is no sign of showing respect to employees. The mail was just like an order. I was about the join this company but felt very bad that day. If this is the way they treat before joining, how they will treat after joining.