Bad Service from Superbalist

I bought something from the Superbalist website on the 3rd December 2019. I received a notification that my parcel will be delivered on the 5th of December, it never came, then again I received another notification on the 6th December. Again my parcel was not delivered. Then I received another notification on the 8th December but because this was on a Sunday I could not receive this because this is my work address and not my home address. Again I received a notification on the 9th December. Not sure if I am going to receive this parcel as I have no trust in either the courier or your help center. I spoke to a supervisor after I spoke to a very rude lady, She said she will contact the courier and phone me back. I am still waiting for that phone call. I then spoke to someone else, he also said he will speak to the courier and then they will sent me a mail with an update. I also never received this update. I then phoned them again and all they said was that I must wait as the driver have 64 deliveries. If I can give any advise not not buy from them as you will not get your parcel. The Help centre also told me that I will not get a refund immediately as the parcel must be in the warehouse before they can start the refund process. If I look at the delivery I don't see that this parcel will be delivered to the warehouse any time soon.