[mothered]

Update 15/04/2022 - a few days ago I received an email from a Case Manager for EAA (Europe, Africa and Asia), they have asked again for proof of purchase, and even though I had sent it in the past they wanted it again

Did they mention why the POP was required again?

Do you think because it took me a few days to send the invoice, would it reflect bad? (It took me 3 days in total, as I have been busy)

Not at all.

Delays are expected due to personal commitments or otherwise, and companies are aware of It and allow time to respond.

so a few days later I sent the "fake Amazon invoice".
Will they cross check this with Amazon? What are the chances of this happening?

They may cross-check It.

I've personally experienced It a while back. I'm not suggesting It will happen, but rather the possibility certainly exists.

Also I need to mention that the email from the manager was stated as:
"In order to assist us in tailoring a resolution, can you please share with us a copy of the invoice that corresponds to your purchase? "

What do you think?

The manager Is requesting It for a reason, and not to file It away collecting dust.

Fingers crossed the reason Isn't related to verifying Its authenticity.

Personally for me, if this SE succeeds, I need to rethink it, because it has taken 4 months so far... however if this is successfully done I am claiming a laptop worth over £1500... so let's see...

The upside Is, you're now aware of what should be done the next time around when SEing under similar circumstances.

This experience will take the positive out of the negative and help Improve a few flaws In your methodology, thereby strengthen your social engineering skill set.