Goibibo - Cancelled my return ticket

I booked * round trip ticket from Delhi to Singapore (Jet Airways) using Goibibo and total I paid *****. I got confirmed ticket for the same attached is proof from Goibibo side. But just some days before to upward journey they cancelled my return ticket for no reason. I contacted Jet and they said as you have done the payment using Goibibo so contact them. I did the same and Goibibo people suggested me to carry on with the upward journey and they will adjust me in some other flight for the return journey. Despite availability in return flights they didn't adjust me in any other flight and I had to book some expensive flight to come back to Delhi. After that, I again talked to Goibibo as Jet people were not ready to talk and they refunded only **k after the long and time-consuming conversation and arguments and closed the case. Now did I pay only **K for return flight? Where the overall amount for this itinerary was *****. if I divide the amount it would come ***** for one side then why only **k was refunded where is rest of *****, where they lied a lot and caused me a number of issues like high payment for return tickets in some other flight, tension throughout the journey, and loss of paid money. Whenever I talk to Goibibo people they said talk to jet airways for further clarification and Jet say you didn't use our portal to make this booking so Goibibo is liable for all issues, now this loop is going on and who is in trouble just me. I strongly condemn Goibibo for such an irresponsible booking system and customer service.