Vip Hexa - Promised number not delivered

Despite repetitive follow up for refund of my amount Viphexa has failed to honour their commitment. It has been more than a month since I had paid up for the number. Viphexa falsely claimed was available with them. I had ordered mobile phone number ********** at Viphexa online store on *th July **** with Order No. **** and have paid Rs. ****/- for it.
As promised, they failed to deliver the number and later on claimed that it was wrongly meant for sale. I did agree to their defence and also agreed to their request that refund would be initiated within ** hours from the date of purchase. I have been regularly following up for refund since then. No refund initiated.