@Premio,I think you were not robbed of any money, most of the CFS, Im meant to understand give 4 or 5 days free. I recently self-imported my ride and for exactly 26 days I paid no extra coin at KENCONT CFS though mine was 'risky' arrangement.
MY experience:I bought a vehicle when on high seas,ie Did a T/T to AUTOCRAFTJAPAN (ACJ) and collected the unit from the local representative at Mombasa.Since by the time i was buying the vehicle was already loaded in the ship,the all documentation were in ACJ country representative name , save for the payment invoice. Though risky it was a blessing that the unit came with their name, otherwise i would have paid hefty storage fine