[mothered]

I chatted with an Amazon support employee on 21 August who told me that I would receive a refund within 24 hours

^ Do you have a record of the conversation?

The reps are not helpful at all and are just giving me useless generic answers that don't even align

What were their exact replies?

Should I charge back?

No.

Your claim Is still active, hence there's every chance It will succeed.

There is no evidence that the package was delivered whatsoever so I'm confident Amazon can't do anything.

Then why are you thinking of a chargeback?