[jellybelly]

Clarify that I am doing the EB method, so the signature thing doesn't make sense. and I think it will be better to avoid giving my id card

Agreed.

Ask them to justify why they require your ID card.

Refund got confirmed finally!
But for some reason they're sending a ups driver round to collect my ray bans case??

I had the same thing happen to me. I got an email with a UPS label attached two days after I had received my refund, saying that I could return the "parcel" - either drop it off at an access point or arrange for pickup. I obviously ignored it because I wasn't going to bother sending back an empty Ray-Bans case. Around 3/4 days later a UPS driver came to collect the parcel.

He said he was here to collect a package for Ray-Ban. I told him there must've been a mistake because I certainly have no package to send. He just confusedly giggled and left.

Just as @mothered said, it's silly they'd arrange for an empty case to be shipped back to them. The cost of shipping, CO2 emissions, extra unnecessary work load... for an empty case.