interweb nut-job

so im trying to buy a couple of new visors for my car and found exactly the thing on ebay. We sent off a cheque from pel's account for £15 + 7 postage and packing as my paypal account isnt set up, but it took a while as the seller's based in the western isles of scotland. By the time it was presented it was the end of the month and the account was empty ( usual end of themonth situation) so the cheque bounced - Ok pretty frustrating all round but certainly an easily resolved situation with a simple email - you'd think....

so here's the mail i got from this psycho:

"I'm sure you already know this but your cheque bounced for the visors. If that was an error then you should correct it straight away. If, on the other hand you're stupid enough to think that because the deal was don over your PC so you can rip us off then you must be either really hard and own a gun or really really stupid!!! It's this simple mate, whatever your name is, you get £36.75 in postal orders sent to me to cover the item and our bank charge for your rubber cheque or you don't sign for the goods which will arrive in the next few days. If for some reason you do not do any of these then our associates from Poplar will call to collect the money for the item which at present you've stolen from us. I'll also be informing ebay that you have a false number listed as a contact number which will get you immediately struck off. It may just be a £20 quid pair of visors but I guarantee you that nobody ever rips us off. Have a good think about this before replying, the UK isn't that big!!

what a total crazy