Reseller wont pay back courier cost

[renanderse-48]

I have bought an item, that was defect, and the reseller asked me to return the item, and promised to pay for the courier cost.

Since i live in Denmark and the item should to Lithuania it is pretty expensive to send a package that way.

Now the reseller wont pay me the full amount for this.

When I go to my account i find no way to contact EBAY, so they can help me.

How should i proceed?

Regards