Extra luggage charges for International trip booked through GoIbibo

I book a round trip from Johannesburg to Indore from Goibibo. I checked baggage policy before getting my ticked booked and it allows me to carry 2 pcs of check in baggage ,23 kilos each. While travelling back from Indore  i had a connecting flight from Mumbai.I traveled via Jet airways from Indore to Mumbai and they charged me 8500 rupees for my luggage saying they only allow 15kgs in domestic flight. My luggage was a per international baggage policy which goibibo displayed during my ticket booking. Also i always travel via same airline and same route it never happend before but this time “jet airways” charged me. I contacted Jet airways customer care for same and they said agent(Goibibo) is responsible for this.I contacted Goibibo customer care they are now saying i must have checked baggage policy and it keeps on changing.However i did checked it and i also share screenshot of baggage policy with them but they are now denying that and said they wont refund my money. Also they booked ticket under different PNR. As a customer i did what was under my control and checked policy and booked ticket which never said i can only carry 1 bag of 15 kilos. I also asked Goibibo to share proof with me of baggage policy displayed to me while booking they did not do that and share technical log stating “Please be informed about your luggage allowance it might get differ for each sector” .In my opinion it is very generalized statement which is no proof whatsoever. Please help me with this.It is huge amount i payed and everyone withdraw themselves from it Goibibo and Jet airways. Also during international travel how is one suppose to carry 15kgs in 1 flight and 46 kgs in other?? That’s the whole point of getting ticket booked from Goibibo so that baggage can be accommodated else one would book independent flights by their own.Attaching here my ticket. I have few mails communication and payment receipt as well in case needed.

Vidhi Rawal
Dewas 455001, Madhya Pradesh
Email: vxxxxxxxxl@gmail.com