3 weeks no delivery!! ***

I placed an order with Boardmans Online on the 3/12/2017. After waiting the 2 to 5 days for delivery I called them on the 11/12/2017 where I was advised that the courier had been in an accident and my package was not recovered however, a new package had been dispatched and was on its way. I called back on Thurs(14/12/2017) to be told that the package was out for delivery on that THursday and I would receive it by the afternoon. I called back on Monday 18/12/2017 and was told someone from the online team would call me back with a tracking number. Someone did call but no tracking number just to advise me that one of the items was out of stock and I would be refunded for that item. She then advised that package was dispatched on the 18/12/2017???? What happened to the package from the 11/12/2017 which had all the items??????????????????????????????? It is now 3 weeks later and I have had it. I want a full refund!!!!!!!!!!!!!!!!! Order #: ********** 76