Bad service

Been ordering from Shein regularly. Had no logistic issues. Been waiting for a package that was supposed to be delivered on 16-12-24 to my work address. Still nothing. On Imile training system it shows my package is still in transit to KZN but when phoning them I was told it will only be delivered 23-12-24 to the address and that it is KZN. Was promised that my query would be attend to by a supervisor that will be at work at 9 and that I will be called back. Up till now ,no call , and when I try their contact number it says that there is a temporary issue with it. Going to be away from Monday so just want to knowwhat is going to hapen now to the package that I urgently need?Not chuffed with the bad service at all.