Olx India — Car in OLX custody broke traffic rules without ownership transfer

I had sold my car MH12 PT 2734 to OLX in Feb 2021. This car was taken on road and somebody broke the signal without legal transfer of car ownership to the new owner. I received challan SMS from Pune RTO to pay the fine and then I got to know about it. OLX has not yet paid the challan and I have received a summon via online lok adalat to pay the fine. OLX agent kumar.[protected]@olx.com, Anurag.[protected]@olx.com, amol.[protected]@olx.com are not even decent enough to own their mess. They are neither responding to my emails nor paying the challan. I hold legal rights to sue OLX for the fraud while buying/selling the cars. Not sure what other crimes these guys might have committed with my car.