Job delayed due to background check

Hi! I do have an offer letter and should start my job last month, but the thing is my start date is delayed until now due to international background checking. I proactively communicate before I relocate just to be sure things go on smoothly and I recieved any further steps to do. Until 2 weeks before my supposed start, thats the time they do my background check, ask some papers to be filled up and etc, and still results are still pending. I ask if there are any support or compensation but I got nothing. What will be my next step? On my part, I did the best I can before I relocate, especially before relocating.