Tjori — Not receipt of refund

I have ordered one kurti from Tjori. It was not of correct size so I asked for return and refund. They said only exchange possible. So I booked another item with bit extra charge. They picked up the old product and said while delivery of the second one, I only need to pay the extra amount. Today the product came for delivery but they are asking for exact price of the product. That means the refund of the old order is absorbed by tjori. The courier boy told that tjori did not mention anything about this. He was instructed to collect the whole price of the current item. It is impossible to reach them. their ph number don't work. They don't reply to mails too. They take almost a month to deliver. the contact details of them are
Registered Office Address
Kh 356/357, Sultanpur Metro Station, MG Road Delhi, Delhi 110030, India
CIN: U52399HR2016PTC058191
Phone: [protected]
(Monday-Saturday 9 AM - 8 PM)

I need my refund and hell with tjori. Am not gonna buy anything and asking everyone else to stop purchase from this site. Bloody thieves!!!