Best Credit/Debit card for fuel and other expenses

Dear fellow dimers. 

I am new to the credit card scene. I was offered a new cc with my salary account from HDFC, the Millenia card. I have Hdfc easy shop platinum debit card and SBI in touch Visa debit card. For the past few months I have been filling fuel amounting from 3000 to 6000 Rs. What would be the best Card among these options to use for filling fuel so that I get max benefits? I am not so familiar with how credit cards work and haven't had the need for one till now. Used mine once to buy a vacuum cleaner and convert it to EMI for my cibil score's sake. I would be needing to take a home loan soon. My online spends are mostly dress and hotel spends and probably less than 10k on Amazon and Flipkart. I used Payzapp for reward points and my Hdfc debit card at fuel stations. What would be the best option for me going forward. I would be filling fuel at the same amount in the foreseeable future. The purchase and other stuff would remain same. Should I get a new credit/debit card or continue with the current setup? Or should I get a new card for mostly the fuel in mind. I don't see myself buying items on EMI much but that option can also be ventured. Please help!