Misleading Delivery Tracking

Renewed my Licence Disc via the Bank and they assigned Skynet Worldwide Express to courier the package. The parcel has been out for delivery since Friday the 22nd and to date I have not received it. I have been tracking since Monday and everyday the package is out for delivery and then sent back to their warehouse. This is frustrating because I need the disc to use my car. When I try to contact their offices the line goes unanswered.