What advice.  I’m simply pointing out that if someone lodges a complaint with online fraud, and they have no other evidence other than “I didn’t receive it”, then the file will close on the grounds of a lack of evidence. 

So they can lodge their complaint.  But, having in my time successfully initiated a number of fraud enquiries, quite of few of which have resulted in successful precautions, I‘m  inclined to think  it takes a lot more than a simple ‘I didn’t receive it’ to successfully prove it was never sent, and mind you, as this a criminal matter, the seller doesn’t have to prove they sent it, the prosecution has to prove they didn’t,  and that may be the reason why, though I’ve looked high and low in the legal reports, I have yet to find one instance of a successful prosecution on that basis alone, but maybe you know of one.