The Trickery within Vodacom

Last year June i was called by vodacom being offered a new contract of which i took and explained to the person who was assisting me to make my contract a closed one and not an open one. Now i have been told i owe over R 9 000.00, i called customer care at 09:12 this morning to speak to the manager to get assistance and was informed a log will be made and i will receive an sms with the case log, but no sms came. If this is the way vodacom chooses to treat their clients i cannot contain such disgust in their business practices. I have been a faithful client to vodacom and i feel disregarded when i an at the wrong and of the stick, i personally feel this is an unfair business practice at the detriment of the individuals who have no corporate backing.