Travolook — Not refunded my flight fare

I have booked my flight ticket through Travolook on 5th April for a traveling date on 3rd May and the fight was canceled by an airliner on 3rd may for operational reasons I called travolook customer care number many times and they replying to me within 45 days it will be refunded to my account. But now 4 months got over till now not yet received my refund amount today I tried to call customer care number it's telling that number not valid. Please help me with this
The booking reference number is REF[protected]