Hi guy,
I understand your concern. I think that this Marketplace Extension can help you much
Magento 2 Marketplace RMA addon from Landofcoder
It allows the markeptlace customers to return their products which purchased from sellers with ease. Also, it helps user to review and manage RMA request in single place.
Outstanding features:
Highly Controllable RMA System
Multistore Support
Dynamic and User-friendly Custom Fields
Smart RMA Report Chart with Filter
Quick messaging
Instant RMA Activity Notification
Intuitive and responsive submission interface
Unlimited and Customizable Reason, Condition and Resolution Setting
Handy Packing Slip, Shipping Label, and Confirm Shipping Buttons
Check Multi Vendor return status with ease
Fast Access To All Submitted RMA Request From Single Place
Speeding up RMA Process with Workflow Rules
Flexibly Selecting Return Items
Effortlessly Managing Quick Responses
Easy to insert return address
Easy to configure