Overcharged

I recently upgraded my contract with vodacome for a smartphone on January 02nd. I noticed my bill has skyrocketed to R1 103.20. From the previous months this is a huge amount to be paying. I am being charged for BIS and for Data usage however I have kept to the limit of 300MB and i have been charged for SMS which was advised by the Eastgate Branch will be free.<br> <br> Can someone from Vodacom call me this evening after 6pm to advise me what the charges are for. I feel that Vodacom has not been fair when explaining the costs involved for a smart phone.