I had a fight with my father, left the house and moved to a different location, then my father also moved somewhere else. I want to patch up with him but he does not want to keep any relation with me and does not take my calls. What is my obligation?
You must keep on trying and trying to apologize from him and get his pardon. Allah (SWT) orders us to be nice to our parents even if they are non believers or wrong doers. You should not join their wrong but you must deal with them in the best way. Seek help of relatives and friends who can talk to him and do everything possible to make him forgive you. It is not an option but an obligation of the top priority.
Wassalam.