Lost package - Terrible service

I am very disappointed in the communication and customer service that I have received from Aramex, Stellenbosch. I posted a package from Somerset West to Paarl on the 8th of June. It is now more than a month later and my package has not been delivered. I have phoned numerous times and was told that my package is missing. I have been told that the case is under investigation, but not once has someone contacted me to give me feedback. I am still waiting to hear from someone. The last time I phoned, I was put through to another department, but no one answered. I tried phoning again, but no answer. There has been no real effort from their side to try and fix this situation. I haven't been asked to fill out any form or been told what to do next. I would appreciate good feedback as soon as possible.