Disappointed by DHL South Africa

I ordered a item off of AliExpress paid for DHL to deliver the parcel. That was back in May the parcel was supposed to be delivered on 9th June. The parcel got held up at customs for a low value stop I provided the invoice and a copy of my bank statement as requested.

Now I have been emailing and calling and nobody can tell me where my parcel is. So on Monday the 14 September I go onto the DHL website to track the progress and my tracking number comes up invalid. Once again I call DHL and speak to a customer service person who tells me I must get hold of the supplier and ask them to track it. I said that as the supplier is in China and they have clearly stated that the parcel was in South Africa and was been held up by DHL and customs it was my responsibility to solve the problem. Your customer service person then gives me a reference number and tells me that I will get a call within 2 hours. To your credit I do get a call within 2 hours which rings once before I answer and the person on the other end puts down the phone.

This is truly outrageous DHL South Africa I need to know what has become of my parcel.

David