Vlebazaar — MCAFEE TOTAL PROTECTION: Serial Number not working

I purchased an antivirus "MCAFEE TOTAL PROTECTION - 1 USER, 3 YEARS" from Vlebazaar on 13-OCT-2022, and after multiple followups, they provide me a key and guidelines to download and install the antivirus.
The provided key is incorrect and not working. After that, I followed the Vlebazaar team multiple times via Phone and email. On email, they are not responding and on phone each time they said: "They reported the issue to the concerned team".
Today is 24-NOV-2022 and still, the issue has not been resolved.

Following are the order details:

Product - MCAFEE TOTAL PROTECTION Antivirus (1 USER, 3 YEARS License)
Order No: 1805699
Order date: 13-OCT-2022
Serial and download details received by email on 15-OCT-2022
Ticket with VLEBAZAAR: 84584
Trying to contact - Since 15-OCT-2022

Could someone guide me on how to get a refund?

Rajiv Kumar