GoAir — regarding cancellation of flight

I had booked a flight with go air a month prior to my scheduled trip flight no g8 717 n just the night before i got a message that the flight has been cancelled. Dear smart flyer! Goair would like to inform you that for your pnr y15hpb the flight g8-717 on 18dec'17 from del to amd has been cancelled. This change is due to issues beyond our control. You will be contacted within 24 hrs for further assistance or you may call [protected] or[protected]. Kindly note effective 29th oct, all goair flights will operate from terminal 2 (T2) new delhi, indira gandhi international airport. Click here for location: this was the message i got i tried calling almost 20 times n kept on hold for 30 minutes many times but there was no response there can be nothing more pathetic. Lesson learnt never to trust goair again n pls i want my refund including additional charges for my new ticket