Angry client

My ********** 78413 has been with dpex at their customs center since 21st jan its now the 2nd feb and its still shows at customs,when I call dpex im told they have partnered with sharp logistics my parcel is with them and gave me a number to call which rings allday to no answer I called dpex again told them their sharp logistics does not pickup and the call center lady didnt know what to say to me.now how does a big company like dpex partner with sharp logistics poor service and and still make it my problem that sharp does not answer calls I paid dpex its not my concern if their partner sharp logistics does not deliver.I am very frustrated as this delay has cost me business I urgently need my parcel,please!