Very BAD service from CourierIT head office JHB

On Jul 13, 2020. Tracking #: UA***. They have lost my parcel and then blame me, saying "Client Cannot Find Parcel". Not only does it look bad for my business but making me out as a ***** as well. The system does show they did pick it up. When I called to get the info they say they will get back to me, They never called back. I have left several emails and made a few phone calls. only once someone called me back saying they system is offline they will call back later and still no one called back leaving me still without any info. Or refund. This is unacceptable. I demand a refund on the order you lost and an apology to my client for losing her order.