I might have sent a refund to a guy who lied about not receiving digital goods

[nedazg]

I send a refund to a guy who filed a case against me on October 22nd for not sending digital goods. I thought that I actually didn't send him money and I rushed to refund because I didn't want this to go further. But I realized my mistake and remembered that on that day I did send him the digital goods and now it is too late to change it. What should I do? 

[kernowlass]

@nedazg 

Sadly as you voluntarily refunded him then nothing really.