Question for DHL EXPRESS CITY SQUARE SERVICE CENTRE

I sent parcel via DHL from UK to Uganda with ref no ******** and should reach Uganda today acording to the DHL customer service in Uk howvwe my client not herd anything and i cant track it is shows ON HOLD since Friday the 26th of May 2017.

my client need the parcel for tomorrw pleaes advice the progress of the parcel.