I would just leave it on charge for longer, and make sure the charger and cable you are using both work correctly as well.

You can’t.

Yeah, how dare Apple destroy your year old phone… 🤷‍♂️🙈

Casetify 💩

I can’t comment on the refund question, but can say you’re doing the right thing in returning!

Why did you shut it off to charge it? It’s likely attempted an update and there’s not enough storage on the phone or something similar. You’ll have to put the phone in DFU mode and restore through iTunes or Finder on a newer Mac.