Wrongful Billing

I don't understand why DHL is always treating their customers like this. This is not my first complaint. I mean how hard is it to simply just send invoices? Why do i have to call and follow up and chase you around to send me an invoice so my shipments can be cleaared?<br> Unfortunately i don't get to choose which courier i want to use, if it was up to me i would have stopped using DHL a long time ago, your service is just terrible. To make it worse now i have to pay more for my invoice when this issue could have been resolved a long time ago.<br> Terrible, Terrible service.