Xpressbees Logistics — undelivered parcel and money not refunded

I had ordered from clovia. They used xpressbees as the third party vendor. I have paid them twice for the parcel for which they said they will refund me for the reason that there app was not able to show the payment update. They did not refund me and shared any msg regarding the same. They are saying that i should drop them the mail which they i have already done. No reply yet for the same. They are not ready to give me any confirmation on mail or message regarding the refund and saying it's a bank mistake. They also refused to deliver my parcel