Getting responses to issue inquiries

I have tried to contact someone from OfferUp twice now regarding missing payments for delivered items...I have gotten no response, and now have straight given away 2 items with no payment. Has anyone actually been able to resolve their issues, and how????!
Level 9
Hey @Slilian did you contact the support by email? Only way you can communicate with them. Realistically it will take at least couple weeks based on comments from the post maded by sellers with issue.