No one knows where my package are

I purchased a cell phone on the 23rd of November 2018 at Makro online. It said delivery between 7-10 working days which expired on Friday 7 December. Earlier last week I contacted them and the response was 'Friday is only the 10th day so you will have it before then'. Guess what, it did not arrive, when I phoned this morning, they said the courier company have picked it up on the 29th of November 2018 already. But when I contacted Wumdrop they have not the package on the system. On Makro's page it shows order complete!!!