Welcome to Justanswer.com, my name is Dustin.I'm sorry to hear about the issue you are having, I will do my best to help you resolve it.
Can you clarify what type of payment you are trying to "get"
From what service or company is the payment from?
How was your payment / sale supposed to be made. Through paypal?
How did the buyer choose to pay?
Have you looked at the pending transactions in paypal?
Also, are you certain you are checkin g the correct paypal account and that that specific account is the one that is attached to your ebay account?