You should have waited till you calmed down then wrote it - it comes across angry and nasty and all over a potato lol. I work in a customer service/complaints job and the minute someone swears at me/gets cheeky or sends me nasty emails/letters - their complaint goes to the bottom of the pile and all the polite people who are a little more patient and understanding, get dealt with first.

Anyway, you'll probably your money back and another free potatoe