MWEB not interested in consumers rights or the CPA

I gave notice of cancellation on my MWEB fiber month to month service more than a month ago to terminate on the 30th of September. On 1 October MWEB had cancelled the service on their system but had failed to cancel the service on the Vumatel network, thereby preventing me from being able to signup with another provider. On phoning their support line I was told that the technical support people are unable to do this and it must be done by the cancellations team, the catch being they only work on weekdays so I would have to wait for them. By doing this MWEB is violating the CPA by denying me the right to choose the supplier of my choice. No doubt tomorrow the responsible team at MWEB will scramble to resolve this issue, this does not however excuse the ********* behavior they are guilty of here. It seems once an organisation gets to a certain size they stop being interested in how they can serve their customers and are only interested in making money.