Terrible online shopping experience

I ordered a few baby items online, and cancelled the order 2 days later (31 November 2017). I received a ref nr and was told that I will be refunded between 7-9 working days.

A few days later (2nd Dec 2017) I received an email saying that my order has been dispatched, I then sent Jet an email asking why my CANCELLED order has been dispatched. They rep**** and apologized promising to rectify.

On the 4th December the order arrives at my office! The courier tells me to sign for it and take it up with Jet.

I have constantly been following up and calling but nobody has resolved this. My last call was this morning 07th December 2017.

I am still sitting with this unopened parcel, and no refund!