Terrible service from Aramex

I use Postnet to ship all of my business parcels, I have great service from Postnet. However, when Aramex take the parcels, they get destroyed completely, damaged, lost delivered to the incorrect address. Now that I try to put in claims based on evidence from PostNet and from my clients Aramex just refuse to step up accept responsibility. I've met with the regional area manager from Aramex in Postnet and still no joy!!! Again, corporate greed and bully a small customer. Aramex pay for bad service and loss of my parcels!!