Zestmoney — Not getting my coupon code and pin

Yesterday on 6th October I generated Amazon gift vouchers and I got a mail where it was written that please click here to see the voucher and code and when I cliked it took me to zestmoney website although I have the app installed in my phone but there was message below that download app. I cliked to see the voucher that instantly I see a message there that you voucher code and pin will be mailed shortly. Even waiting for long when I didn't get any other mail like that I again repeated the mail process and this time I accidently generated another voucher and again got another same mail. After that I realised it was a mistake. Then connected to customer care. after waiting for 15 minutes they connected to me and after asking my name, mail, phone and pan for 4 times they were like repeatedly saying me to wait for a while and after 20 minutes I lost my patience and accidently cancelled the chat. After that till now I am blank what should I do... I had another bad experience with Aditya Birla finance that after getting a NOC against my some loan from Birla finance I tried to reach them that what kind of loan it was and who took it? Bocz I didn't applied for any loan. Birla Finance didn't responded the mail till date. They are becoming scammers.