Quote:

Then he e-mailed me to say about the message and now he doesn't trust me, he said he had sent the package but will get it stopped straightaway unless i make the other 50% payment.

This is the mail that could proove you are telling the truth.
I wonder why you didn't post it as reply from the first moment. Please post entire e-mail with full headers to be able to connect 44Kent with an accusation without evidence and all personal data will be removed but his mail etc will be in public for ever.

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Better safe than sorry