S.r Store — Sent wrong product and didnt refund

Address:	Gate no. 5 abdul hamid merg, malwani malad west, near gold cinema. Mumbai, Maharashtra 400095
Website:	No website there is WhatsApp nmbr provided in olx.Com

I had seen in olx that there is a seller selling mobile phones in cheep price... Then i chat in olx for it and they give the whtsp nmbr... Then i chat and ordered oneplus 8 pro... Then we setteled the deal at 20000/-
Then product arived and i got a wrong product and damaged iphone... I complaint same in the whatspp... Then no one rply and return or refund nothing... I called them and they said refund will be giving tomorrow, day after tomorrow... And its been 1week and they didn't give any refund... Pls take hard action please... My nmbr [protected]