Wow I have never had issues like this and I've shopped with big w, target and woollies. I would take photos and ring/email. Usually there is something to say that if you are unhappy they refund and/or replace.
In a side note, we bought some lights from bunnings and when we got home 1 had been opened and smashed. Obvious that someone had bought and taken back and it had been put back on shelf with the others. We just took it back for an exchange. Don't understand why ppl are such shit heads. This could have happened with the coffee machine.