Bad service from Vodacom

Vodacom promised nearky 2 weeks that they will contact me in connection with a vodacom contract of 24 months. That is all of a sudden 30 months and the last 6 months i must pay R109 more per month, seem to me they **** when i ask them to change my open account to a topup that it won't cost me a cent and nothing will change! After many many many years i must tell the people rather go to another cell phone provider!!! Vodacom isBAD! Even promise they will contact me! I am a pensioner idont have money lying around.