Frustrated customer

I ordered a data sim online on 25 November 2024 and the datat sim has not been delivered as yet.The data sim was supposed to be delivered to my place of work in 5 -7 working days but this never happened.I phoned customer care on 13 December but they cant get hold of after sales department and request me to do the following up.I told them im at work and they must give status feedback.Apparently the data sim is with the courier and they not 100% where it is according to the initial consult i phoned.So i dont know what to do now????? No help and alot of frustrations???? Invoice nr was K46****8,order nr is 5-3************1