Poor Service Levels

Placed an order # ********** 57 with Zando on the 6th of December 2018, paid with instant EFT and the order with the payment was confirmed someday. The delivery took long with no communication in this regard despite my 2 emails enquiring re the delay..... no reply from Zando. Eventually the courier just pitched up on the 24th and wrong item was delivered (ordered size 9 which the box was marked with correct size but the actual item packaged was size 6). Tried to return the item with the courier with no success. i then resorted to generate a return # ********** 15 same day, till today the item yet to be collected. I have tried on several occasions to communicate with customer service on the 4 Jan 2018 and 7 Jan 2018 re the collection with empty promises that they would collect. Unfortunately, the problem remains unresolved and it is clear that Zando is not interested in resolving customer complaints.