Interesting read on The Age today, someone go charged $1,100 for a $2 item at IKEA.
http://www.theage.com.au/business/retail/ikea-charges-1107-f…
Do you always check your receipt?
Personally I don't if it is a few items and it adds up to what I had in my head, otherwise I'll check it before leaving the checkout.
Seems unreasonable to me to have such dire doubts, and to then throw away the receipt without even looking at it.
You have too…always check receipts and MasterCard statements.