how to report for scam to DHL?

Burhan K asked: Hi:
I have ordered for a mobile phone online through a company.
They said me to make payment through Bank Wire Transfer.
But before payment they showed me receipt of DHL, that they are about to send me product as soon as i will show them proof of Bank Wire Transfer receipt.
I sent payment to [...]

Who Should I Report an Email Scam to?

Angelwings asked:
I had placed an ad online for an expensive piece of equipment, and I received an email from someone saying they wanted to buy it — they sent about three emails sounding all sincere, talking about what they were going to do with the product, etc. I gave them my address to [...]