[mothered]

now, 6 months after this, I got an email from amazon OFM stating that on my account they saw multiple tickets asking for a refund, but that they didnt get the item back and if I have any questions I should contact them

It's taken them 6 months to realize the Item wasn't returned?

Plead Ignorance by saying you cannot recall the series of events that took place 6 months ago, and cannot understand why they're bringing It to your attention half a year later. See how they respond to that.