Bad service from Audio Mart

I ordered headphones for my daughter for Christmas (15 Dec 2019) and it is today 23 January 2020 and it still havent arrived. I phoned before Christmas to follow up and was informed that their supplier already closed and will only open on 6 Jan and that my parcel will arrive soon after. When I followed up on 15 Jan (Wed) I was informed that I will receive my parcel friday, latest Monday (17 / 20 Jan). When I followed up again today (23rd) I was informed that they havent even sent my parcel yet!