Uniconnect — international sim card issue - money refund pending

Address:

New Delhi International Airport Terminal 3, Gautam Buddh Nagar, Uttar Pradesh, 201301`

I had purchased international sim card from new delhi international air port terminal 3 on 17th march 2019 and paid rs 3000 from my credit card. During purchase, i shared my mobile detail (Lava z91) and was assured that the card will work in this hand set, when i reach us. But, the card did not work in us. I informed the tech support and the customer care o[censored]niconnect over the phone and also sent them an email.
I was told that the money reversal would take 10 days. It has been a month and have not got my money back. I also have their statement on my email. If i do not get the money back, i will reach out to consumer court.