Very poor customer service

Placed my order on 9 November, received it on time just to be disappointed. Most of the items were not fitting at all - totally wrong sizes on the website! Other items were not exactly the way it looked on the website but I decided to keep those though I wouldn't buy it if I saw it in a store. On the day of receiving my order I requested exchange and return on some items. It was collected a week ago on 20 November and still nothing - no info on delivery of exchanged items and no refund. Very poor customer service!