If there was a customer service Olympics DHL would win the ****tiest overall experience award.

So you'd think that DHL being such a big and successful company would be able to train their staff accordingly, my issue started on the 13th of July 2018, apparently the details for my address were incorrect so I called in to customer services to get these checked, I was asked to fill in a form and email it to the advisor which I did. Heard nothing back so I emailed the agent again on the 17th which he didn't reply, so I called again, I was told that my parcel was going to be sent back to the sender, which in this case was going to be a serious issue as the parcel is of high importance which I made the advisor aware of. I was assured that the parcel will be redirected to me again, sweet I can relax now... No chance, next day I get an email still saying it will be returned, emailed the advisor and guess what? No reply. So I stopped receiving the update emails and any correspondence from DHL at all, email the advisor again on the 23rd, no reply, so now I'm getting impatient so I send in a complaint to DHL which I get a response, with not even a hint of an apology I might add, stating that the item has been signed for in the UK, so I reply to what is now the 3rd agent who is meant to deal with complaints, firmly voicing my dissatisfaction on my experience, to get no reply. Now I know it's not just me when I say that is the ****tiest customer service I have ever experienced and I've dealt with South African home affairs so that's saying something. Not only that but my business has also been waiting since the 3rd of July for a delivery which is still in DHL hands and the corrispondence on that delivery is also shocking. How can DHL expect to keep customers when they treat them like they are of no importance? Now that my parcel has been sent back I have to arrange again for a replacement to be sent which is going to take more time which I don't have to wait, you've waisted weeks of my time not only personally but DHL have also set my business back and is costing it money waiting on these items. Its utterly unacceptable. Now that I've had my say let's see if we will get a reply, I don't expect much.