Gyftr.com — worst site.. voucher code not delivered- no proper response

Address:

600039

Booked a amazon voucher in the website
They r not sending the voucher code
When I called customer care they r not replying properly. Worst experience .. really need someone to take action on this website. I called customer service more than 10 times no one replying properly they are not giving proper respect also. These kind of website needs to be blocked by government. if anyone can provide escalation contact means it I'll be really helpful