Seller sent using eBay Global Shipping Program but package not arrived

[nap-king-cole]

Seller in the USA states they sent my item a month ago through eBay’s GSP, but it hasn’t arrived and seller just says “bummer”.

I ask for them to provide a correct tracking number as the tracking number provided is invalid when I log it into DHL’s tracking system, but they won’t and have told me to chase it up through ebay myself and said “hope it resolves for you”. 

Seller hasn’t provided any proof of sending, only saying they sent it through GSP and said is my problem to locate it.

Seller won’t state where or how they sent it, except saying it was sent through eBay’s GSP, and stated is me that has to try locate it, even through I’ve told them the DHL tracking number provided by eBay in the delivery section is invalid, so am having to ask here.

I don’t have the sellers details, only their ebay user name.

Is this correct? I’d have thought a seller would be trying to locate my package since it has not arrived.

Can someone please tell me how GSP works? 

[cam-2793]

https://www.ebay.com.au/help/buying/shipping-delivery/changing-delivery-address-method/international...

eBay generally use Pitney Bowes not DHL for GSP. So iitt is unlikely that the tracking number provided will work with DHL tracking. 

What does eBay tracking say? Have you tried the number on another all-in-one tracking site such as 17track or ship24?

If the EDD (estimated delivery date) has passed open an INR ( item not received) case!