Where can i complain against indane gas agency?

I AM LIVING IN UNA, DIST- JUNAGADH, GUJARAT, INDIA. IN OUR CITY (UNA) BEHVIOUR OF MANAGER OF INDANE GAS AGENCY IS SO BAD TO CUSTOMERS!! AND WE HAVE TO GO TO AGENCY FOR COLLECT GAS REFILL AND SO MANY TIMES HE MAKE EXCUSES LIKE NO STOCK!! AND I HAVE TO COME BACK WITH MY EMPTY HANDS! AND I AM LIVING IN VILLAGE 15 KM FROM CITY SO IT IS SO PAINFUL FOR ME TO GO TO CITY TWO TIMES FOR SAME WORK!! SO PLEASE TELL ME WHERE CAN I COMPLAIN AGAINST INDANE GAS AGENCY? AND HOW SHOULD I DO THIS?? PLEASE!!!!