[Kilra]

So the SE ended up falling?
Did u ask for an escalation of the case? Did u tried to ask proof of the presence of the watch on the box (tell them it could be an assembly mistake).
The best option to not pass the 30 days return barrier probably is to box them, if they ended up noticing it, told them that u made a mistake and forgot to put the watch inside and will pay the shipping of the return.

I emailed them back saying I want to escalate my case and additionally asked for CCTV proof.

They 30 day mark will pass in about a week.

How do I go about boxing them?

If you're boxing them with dry ice you want to tape up your box cut the tape slash through it
Put in your dry ice then retape it with a different tape

And then ship it back this makes it look like it got stolen essentially

If you're only keeping the Watch and the watch is light enough then still do the tape thing but leave the box in I guess

Alright, but that is kind of risky, isn't it?

What if the whole process extends beyond the return window, assuming Tissot gives us 14 days to return the product?