Lack in Customer Service

On the 31/01/2015 I logged a request to look at why there was excessive data usage on my data line with Vodacom, usage to the value of R2441.81. Please see Reference numbers: S3-8XQ2R-RT9NY, S3-8UB2J-JMYE4 and ***. The mentioned request has been closed and no proper feedback was given to me. Every time I request that a manager in the data department call me I get the same promises that I'll get a call back and that never happens.... I'll be stopping my debit order today, think then you'll get back to me to resolve the problem.