My PayPal auction finished on Saturday & now Buyer wants to pay by Cash & Collect, will not return my Invoice although has told me that it has been received.
What should I do now.
Don't worry about the invoice.
If you are happy for your buyer to come and collect the item and pay cash, that's great.
There's no chance of a PayPal chargeback, and no PayPal fees.
Once they've collected their item, just mark it as paid in your eBay summary - there's a dropdown menu called 'More Actions' next to the item, you can mark it as paid in there.