Excitel — Refund not received even after stipulated time.

I purchased ONU fiber connection from excitel for 1000/- but it has been cancelled by excitel as they don't provide that service. Hence, they were supposed to refund money within 30 days but it's been close to 50 days by today. Everytime I call they just respond by saying I will receive within couple of days. The helplines are not useful as they say they don't solve this issue. please issue my refund swift