Parcel not delivered

I am a customer that was suppose to receive their parcel last week. I didn’t Receive it this courier company claimed that they called me and there was no one at home. I called them at the offices in Bloemfontein and the lady there was very rude. I have never experienced such a bad service from a courier company. The worst part is them lying about delivery and claiming I’m home. I need that parcel for medical issues. My parcel is stuck in Bloemfontein now and was suppose to be delivered yesterday. I’m really tired of calling them. I just want my parcel