Travolook — I'm complaining its been a year but I haven't got refund

Hi
I’m Shivangi. It’s been over a year Travolook is not refunding even I’m saying book another ticket on that behalf they are not processing with that also. Just giving me excuses since year even the customer care is not resolving they are simply cut the call after hearing the complaints. No resolution from Travolook. I don’t know what to do in this case.