Non collection of Correct Colour Phone

I had upgraded my contract and was given the incorrect colour phone, i had requested Cell C to change this and provide me with the correct colour phone. Its been 10 working days and still Cell C has not picked it up. When i call they keep telling they have logged, this is outrageously ridiculous as this I want to use my new phone but cannot. I was also given attitude by a contact centre agent. I am extremely upset with this issue and want it to be resolved immediately.