e bay tracking cods up

Hi Guys 

I sold some Jag parts ;last week to a UK buyer

The buyer confirms he has the parts all good

The U K Post Office has a tracking pic as Delivered  past five days

eBay   has tracking as awaiting delivery. five days

I cannot find a link or message  box to ask EBAY *bleep* going on

EBay confirm they have the money owed to me. and are sitting on it.

How do I get a  through to someone on e bay who can resolve the issue.

Regards  Tony

Tony