Online order nightmare - Terrible after sales support

I ordered online on the 20th of December. My order was split into 3 collections. I received two packages in December and I asked about the third. There was no updates. The slow cooker and other things I ordered I actually needed for Christmas, now it's the 7th of January and still no package. I followed up on Facebook in last week and they told me someone would contact me, no one did. I logged a case online they asked me if I received it after I clearly said I didn't. Till now no one called me to attempt to sort it out. I still don't have my items. The support is terrible.