2 Buyers ignored Collection Only & paid via P/pal immediately & I refunded immediately via P/pal

[ermintrude41]

I had one item for sale clearly stating Collection Only, but a Buyer bought/paid & I refunded via P/pal & relisted the item. 

2nd Buyer did exactly the same & I refunded via P/pal the next day. 

The 3rd Buyer paid & Collected. 

Ebay has charged me a fee for 3 sales & on trying to sort it out, I've compounded the problem by inadvertently refunding the genuine Buyer & they don't know how to proceed. 

I now think I should have refunded via ebay?

This is the first time this has happend to me & I don't know how to get out of this muddle, so any help would be much appreciated.

Thanks

[fargvs]

As advised and for information ... 

Avoid PayPal if possible for collection items as no payment protection is offered and payment is liable to be held for 21 days ... the QR scan on collection code is useful for app users, but without it, go to More actions to mark as paid and despatched >

Cash payment (or cleared Bank Transfer before releasing items) is safest and best for buyer collection or seller delivered items = Immediate payment   >> so, with cash in hand = No 21 day payment holds, PayPal fees, need for scans/codes or risk of later PP Chargebacks/not received/damaged disputes/refund requests etc. ... see >

https://www.ebay.co.uk/help/selling/getting-paid/getting-paid-items-youve-sold/pending-payments?id=4...

Set your 'Cash on collection preferred' payment terms and 'pickup in person only 'requirements here >

https://www.ebay.co.uk/help/selling/posting-items/setting-postage-options/local-pickup?id=4181

[ermintrude41]

Thank you fargvs for your sensible advice - much appreciated.
I don't use Apps, so this could be a problem when a Buyer wishes to collect in person.

Because 2 'buyers' paid without seeing they had to collect & I refunded them via Paypal, ebay assumes I sold 3 items & invoiced me as such.
I was just trying to tidy up things on ebay & inadvertently refunded the actual Buyer who collected.
They don;t know how to send the money back - I might suggest Bank Transfer?
With hindsight, I should have left well alone & pay the 3 fees..
Regards, ermintrude41