MWEB won't let me cancel

I app**** for a fibre line very easily. This was great.

However, I decided to stay with my current ISP - and I was not able to contact any one to cancel this MWEB application, as is my right under the consumer act. The web login portal has a query facility that does not work, just gives a error. I tried this on 3 internet browsers, same negative result. I called the sales phone number and got through after 3 days of calling and holding on for 30mins. Then, I was transfered to 3 people - only to be told I cannot cancel at this number - I was transferred again and asked by a answer service to leave my number and they would either call or sms me on the status of my applciation.

WHY is it so easy to apply, but IMPOSSIBLY hard to cancel in this enlightened time and protection of our consumer act?

this is simply incredulous.