Bajaj Finserv — Supercard protection plan refund amount

I have applied for bajaj fin super card on line with the help of bajaj fin credit card executive ..he also applied for card protection amount Rs.599 dated 15/01/22..but the next day i got message that your application for credit card is regretted..i contacted there executive so many times but he is not responding.. i have also given complaint on there customer care portal through on line but not getting any response ..so pl do the needful to resolve this isue.