I ordered an item for pickup from eBay but it was never received, what should I do?

So I ordered a wwan m.2 cellular card for a laptop, I selected pickup because they lived really close by. I messaged the seller and they didnt respond for 3 days, after they responded they sent their phone number and told me to text them, so I did. They then told me that they had to find the item because they didn’t know where it was at? That was about 5-6 days after paying for it. I told him I’m just going to cancel the order because at this point, I could have had it shipped to me. The seller said ok. Went to go cancel and they declined it. Well that sucks now what. So I went to my bank to dispute the charge and they declined my dispute, and I see no way on the eBay app to try and cancel again and get my money back for something I don’t even have, NOR does the seller even have it! What do I even do? Also please tell me the seller doesn’t get paid until he scans my code. I definitely don’t want him getting the money.