[Resolved]  Airtel — Airtel 4G hotspot not working at all

My airtel 4G hotspot is not working. Have tried resetting it still not working. It shows the connection name when turned on in my list of wireless networks, but it does not connect. The colours on my device are green, blue and red in that sequence. Normally the red changes to green/blue when connected but this is red for the longest time. Called customer care but they did not help either.