VODACOM TERRIBLR CUSTOMER SERVICE!!!

I am DISGUSTED at Vodacom Vaal Malls service. I was struggeling for 3 months to cancel a subscription on my contract. When i went in today to ask the lady who works there if maybe she could phone for me, she got so rude and said that wasn't her job!! I obviously got upset and when i said to her that it is her job, the manager chased me out of the shop like a dog!! Every month vodacom takes thousands of rands from me, and for what? I have terrible service and every month i have a problem with my bill. This month they charged me double!! I will never use vodacom vaal malls service again!