Cancellation of data bundle

I tried to cancel my data bundle today. I was on the phone from about 10:00 am to 14:00 pm to try and do this. I phoned a few times and after holding on from anything between 30 min's to 1 hour I've put the phone down and tried again. I talked to cancellations and they said I must speak to the technical guys, because if they do the cancellation, everything will be cancelled including my email addresses. When I eventually came through to the technical side, they said I must speak to the cancellations department, because they cannot cancel anything from their side. Who should I then speak to!!!