Woolworths online shopping poor customer service

I ordered an item and it was the only size left. During delivery I was never contacted but the courier company contracted wrote I was not available and they could not deliver on the first attempt even though they never contacted me. When I emailed enquiring from woolworths stating I was never contacted, the courier called and apologized and promised they would deliver the following monday. On monday I was informed via email by woolworths that the delivery would be made& only to find out they will repeat again. I then decided to contact the courier and they informed me that they were instructed to send the parcel back to woolworths to someone in head office& guess what, the item is not available anymore online. The courier made it clear this was confusing to them because they normally attempt 5 times to deliver and send it back to the sender of the parcel. I want to believe the person who gave instruction at Woolworths wanted to sell it to someone. I cannot believe the bad service I got from woolworths online shopping. I had looked for the item in 3 stores in Durban and kept checking online and when I saw it was available and was the only item left I took my last cent and bought it only to recieve the worst service💔