IndustryBuying - Refund delay too long

I purchased two item on june **, **** which was *) Powerhouse *hp air compressor **litre PH**** which cost ₹**** in total, and *) Amy H-***-**k ***ml spraygun kit which cost ₹**** in total , which was not delivered in time. I have not received any information againt it, until i contact them, so i requested refund against both the item which they could not delivered on ** August, they promised to refund within *-* working days, so, i waited till the promised date but no news came. I contact them again but they do not refund, I need to work to earn, but my work delayed till today.