[Resolved]  Bisleri International — Returning empty bisleri jars

I want to return 2 empty jar of 20litre each which costs 300 Rs. (150 ₹ each). But there is no option, in there app the option of returning empty jars is showing only when I am buying new one but I don't want to buy a new jars. I tried to contact customer care and even mailed them but it's been days and no response is there. There phone is always busy and no reply of mails. Please help me with the issue asap.