Sarcastic and impatient service from DHL. Still couldn’t solve the problem

Very poor sevice from Mpho Malaza from DHL. Just bought something small on Amazon and received a call from Mpho stating that they need information to clear the package at customs, thats fine, no problem. After contacting numerous times regarding the information they need I only received sarcastic and impatient response. Problem is I’m still at square one trying to get my package. And if I phone and try to speak to anyone else tbey just say Mpho handles my package and put me through to Mpho, and with Mpho I’m getting nowhere.