Yaga doesnt support the seller at all with damaged packages from the courier or buyer

Shocking experience I had a baby car seat purchased; the courier is via the app Yaga. The buyer claims it was broken on receipt, I luckily took photos before placing it in the box, they blamed the courier but Yaga doesn't assist, and mind you it is their selected partner the courier guy. I paid for delivery fees, I also had to call and chase this issue, they want me to take the broken baby seat back?? How does that work? The courier is simply not taking responsibility and Yaga makes this my issue?