Terrible customer service. No help with customs delay

I have been waiting or a parcel shipped 18 August. It arrived in SA on 19 August. It was stopped and inspected by customs, I tried to call DHL after 3days of it being inspected, they tell me to call customs myself. One week after it arrives in SA DHL calls and tells me the supporting documents required. I submit them and request confirmation of receipt. Silence. I call and ask and they say yes we received it, it takes 5-7 days for customs to revert. Now it is 9days after I submitted it. I email DHL and silence. I call and they say we are escalating we will update you on progress. Silence. Second last time I called, she claimed they have been calling but the number on the system must be wrong.... same number they successfully called me on 2weeks ago? So its been 3 weeks since my parcel arrived in SA. I have to run around begging DHL to give me an update. The DHL of yesteryear is gone. I have gotten normal SAPO parcels faster than this. ABSOLUTELY UNACCEPTABLE.