What options do I have for a non-payment?

[CarCatCreations]

Hello PP community,

I have a small family business that is just getting started.  A customer purchased, and paid, for a product which I shipped via Paypal's Shipstation app.  Unfortunately, a couple of days later, the tracking number was still showing "USPS is awaiting the item".  The customer complained about timing so I, trying to satisfy a customer's request, sent him a second one with only the promise, via email, that they would send the 2nd one back in the event both were delivered.  I realize that I am taking a chance at this point but again, I'm trying to build a happy customer base. 

Of course, both were delivered, and he hasn't responded to my emails.  Does anyone have any suggestions or recommend any options?

Thank you PP Community

[sharpiemarker]

@CarCatCreations 

Let it go. Next time, get an Acceptance scan with a postal clerk for either a printed or emailed receipt for all shipments at the post office because sometimes they don’t scan until delivered to save time.