Hello @PaulAdV,
Welcome to our community help forum and thanks for posting!
I understand your concern about receiving unknown payment in your account. No need to worry! You can refund the payment back to the sender or contact our support team to get this reversed. You can reach out to our team through the available contact options at the bottom of PayPal page or message us through Facebook, Twitter and Instagram pages to check this further.
Hope this information helps,
Bindu
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