my parcel is not delivered

Good Morning<br> <br> Parcel tracking number: 20335612SSD<br> Reference number: AF7AA91DEA <br> <br> I am Florence and my complaint is with Express Parcel South-Africa, My sender couriered the parcel from Nigeria to South Africa using Express Parcel Nigeria on the 29th of September 2015. I then received an email confirming that my shipment will arrive on the 30th of September at 08:11 am, on the 30th of September at about 08:32 I received an email from Express Parcel requiring two documents from the Nigerian Custom Company of which my sender said she sent them to the express parcel Nigeria Branch on Friday the 2nd of October,as instructed by express parcel, I have sent many emails without any response from express parcel. My sender went to the Nigerian branch yesterday to enquire about the parcel but they said they will contact me soon, till now I am still waiting for my parcel.