GST ON E MITRA SUPPLY'S

IF PERSON IS HAVING A E-MITRA KIOSK AND PROVIDING SERVICES OF DEPOSITING ELECTRICITY, WATER & TEL./MOBILE BILLS OF CUSTOMERS AND GET COMMISSION FOR THAT SERVICE FROM EMITRA COMPANY. SO WHETHER THIS TYPES EMITRA SERVICES ARE TAXABLE UNDER GST AND IF TAXABLE THEN ON WHAT AMOUNT GST WILL APPLICABLE. PLS REPLY