Undelivered express parcel

I have ordered products online the 22nd of July 2015 it was shipped with DHL express on the 23rd of July 2015, I especially made use of the express service because its urgent, and still I haven't received my parcel as of the time and date now 17:54, 30 July 2015, I made all the calls to them 3 or 4 calls as to why its taking so long, and they never phoned me about any delays and problems, DHL service is very unprofessional and slow, worst courier service ever experienced