Incorrect Amount Debited

My statement dated the 20 March 2015 was incorrect and I called the call centre and got a reference number.<br> This incorrect amount got debited off my account at the April 2015.<br> <br> I was initially advised that I was erroneously billed for in bundle sms's.<br> <br> The second time I called to follow up the agent said that it was a billing department error not only affecting me.<br> <br> I called again in April 2015, quoted the reference number and was advised that my statement was corrected on the day I lodged the query.<br> <br> Yet I still got debited the incorrect amount.<br> <br> After 6 years of service this is not what you would expect from a service provider.<br> <br> Reference Number: REQ***<br> <br> Pathetic service.