Utter dissapointment in DHL

I have ordered items from a company in France and these items were supposed to be delivered by DHL in South Africa. I received the first import taxes request and was not sure how the imports work, thus contacted DHL. I was told that because it was such a big amount I need tax clearance, and that I could use any company to assist with clearance. I was contacted by a Freight company saying they can assist and cleared them with DHL. I was told that I can use them as they are Legit and that I pay him and he(the freight company) in return pays DHL. So I did the payment and received the receipt saying they (DHL) received the payment and delivery will commence. This was about 2months ago. My 2nd parcel came and I also received the import tax payment request, but as the amount was less, did not need the clearance, so payment was made and receipt was also received. On sending the Proof of payment to the agent I also asked when I will be receiving my 1st parcel. No reply was received, thus I phoned the person I have been dealing with from day one. She tells me that the delivery could not be made as the delivery details were incorrect, which was confirmed to her, so this was not true, then a string of lies, of I was not home, the cell number was incorrect and address was incorrect but just funny that on the same details I have been communicated with DHL before deliveries were done, and the 2nd delivery was also made on these details, Then I was told to phone the re-delivery number, where I was told to just confirm waybill number and address and my parcel will be delivered the next day, thus I phoned the agent back saying that it has been sorted, magically she was not in the department anymore but the guy on the phone said no problem he will assist, he looked all up and said he is very sorry, but my parcel has been sent back to France...Long story short I was sent to the service delivery department to have this sorted out. After speaking to numerous people I was told that a Supervisor will contact me to sort this out and have my items delivered back to SA. I was phoned back, and help was given, the item was returned to South Africa, but then the fun started again, I was asked to provide proof of payment, which I did in several ways... Proof of payment from my Bank, proof of payment received from DHL as well as the invoicing received from the freight company who assisted with the clearance. Then I was told that this is not good enough, I have to contact the freight company to send the proof that they paid DHL. Firstly, I am not here to do follow-up work on payments for DHL, but seeing that we are dealing with the valuable item I did do this, and then this was also not good enough. So DHL gave me proof that I did pay, but can't give me my products as they can detect it. What happened with the link of the payment the first time before it was sent back to France?...how many lies am I supposed to hear before I get my products????? if I received the receipt, they received the payment! Total and utter disappointment with service and still they are sitting with my products but refusing to deliver. I really need urgent assistance