Online order error?

[LimeSlice]

According to the ACCC, if I inform them then they have 1 month to arrange to collect the goods.

...Orrr... you could just send them back. Why would it even matter what the ACCC said about it?
Again, the 'right thing' to do seems utterly obvious, to the point I am surprised you are posting about it.

Why wouldn't you just let them know and post the extras back?

[Floweryfields]

I agree with LS, there's a big difference between doing the legal thing and the ethical thing. I too am surprised you need advice to know what to do on this one. It's pretty simple.