Panchami bharath gas agency, thokkuttu, mangalore
Egarding refillinf of empty cylinde

I have got a bharath gas connection, in panchami gas agency, thokkuttu, mangalore. when i went to refill my cylinder, they were insisting me to buy ashirvad atta, basmathi rice for getting it refilled. the rate they were quoting was 350 Rs/- instead of 330. but this time i some how got it refilled by paying 330Rs/- with out purchasing atta or rice, . but they told me next time if i have to refill, i have to buy that products, which is not at all required for me.

is it mandatory that i have to buy the above items for getting a new gas cylinder refilled?