Worst Online Experience

I bought a sports bra online and eventually a package was delivered which I was very happy and thought it was mine. When I opened the package it was my name on the outside and someone else's order inside, nevertheless I phoned woolworths and after 40 minutes of holding on the phone a lady answered and said she'll sort it out. I received an email that they are going to pick up the parcel and sort out my parcel. They picked up the wrong parcel and a lady phoned me and she received my parcel.. I've been trying to get hold of Woolworths and emailed and phoned and can't get hold of anyone. So now I've send the courier on my expenses to fetch my package in the Paarl and I live in Johannesburg... This is unacceptable and I demand a refund for my delivery fee and the courier fee that I had to pay extra... I will keep on posting it till I get a response and a refund with an apology..