I don't know what to do.. I'm being scammed!?

[Tezract]

I'll try to explain what's going on here.. but I'm kinda scared and don't know what to do. I received an large amount of money from a stranger (about $500). They contacted me and said they want me to transfer it to my bank account, buy Bitcoin via cashapp and then send them $400, and I can keep $100. I'm scared to even touch the money to issue a refund. What's going on here exactly and what should I do? I'm worried if I touch the money in any way (even a refund), something could happen. What should I do??

[kernowlass]

@Tezract 

Personally I would refund it BUT check it wasn't sent as goods/services and you got a fee charged, if they did then issue a part refund minus the fee as it was their mistake.

If still unsure then give customer services a call?

Contact options for each countries Paypal customer services are accessed by clicking help/contact bottom left of Paypal pages.

1. Paypal phones when available (you can use the guest option if you can't log in).
2. Live chat is also randomly available.
3. You can send them a message, during business hours you may also be able to message whilst logged out.
Or
4. Have you considered contacting Customer Service via Facebook or Twitter?
You can send them a personal message from their Facebook or Twitter pages.
It's: https://www.facebook.com/PayPal and @AskPayPal for Twitter.