Unprofessional / I NEED HELP PLEASE

I had my upgrade done within the 22 months as Vodacom offers. I had a double billing for two hand sets for three months now. No where on receiving the SMS, nor when phoning the customer service had I been told that I would pay the remainder of the original contract when upgrading, nor when doing the upgrade at the Vodacom outlet no mention was made. Why must I take the BRUNT?<br> Now try phoning the customer service department. Gha!! First you can't get through, then you get help from *********** staff and after that you get told on three occasions to phone back as our systems are too slow. <br> Once again the public is the one that comes short. I had been billed over R 900.00 rand and now it is my problem to get my own money back.<br> Why must the consumer always get the short end of the stick? I NEED HELP PLEASE>