Hi @SMBro,
Thank you for posting your question in the Community. I understand how concerning it would be to see a negative balance, and I'm sorry you experienced that. You can find more information about what happens if a bank fails to transfer funds to complete a payment in PayPal here. If you'd like to view your running balance, you can download your transaction history for a bit more detail.
I hope you find this information useful.
- Marina
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