Short payment received by contract worker

I fully agree with the previous two reviews. My son was also contracted to deliver parcels on behalf of Clicks. The fixed term contract was for three months but this is how it works: month 1 you will receive half of your salary with the excuse that the trip sheets should be submitted by a certain date although you have worked for 30 days. Month 2 you will receive your full salary and it is also now when they start moving you around to other hubs. Month 3 you will again receive half of your salary with the excuse that the salary clerk, Lizzy is on leave and that trip sheets from different hubs were involved. Melanie Jordaan is of no assistance and promised to look into the matter. Its now few months later, still looking and no response received.