Unhappy Customer

I would like to report a staff member at Vodacom Canal walk branch, who sold me a product and **** to me.,im losing my data that I was getting on a monthly baissi, he told me if I cancel he's gonna loose a 1000,what about my data that I lost and made me purchase a ruiter for R1300. The nerve of telling me I must calm down and they I told him this is for my child's school work. They are selling ********* Please help