Goibibo - No Refund from goibibo for ticket cancellation

i booked my ticket for **st april from bangalore to delhi which has the passenger number "gntzxj" using goibibo . but because of some reason i need to cancel the ticket and i called them on **th April to cancel my ticket and their representative canceled my ticket . i called from my mobile number ********** . at the time of cancellation he informed me he will deduct **** (adult ) + **** (infant ) airline cancellation fee and also deduct the convince fee of airline and then he will start the process for refund which was remaining amount of **** . he agreed to pay **** in my account and *** in go cash as i used *** from go cash while booking . but unfortunately i have not received my refund till today (**/**/****) . when i call their call center they always tell me we will call you back and do not provide any details . below is the invoice which i have from goibibo i attached it along with this complaint . also, my service request number from goibibo is goibibo - ******** . my cancellation service number was goibibo - ******** .