Terrible Accounts and debtors department

I have had Fiber service with Vox for almost a year with no issues, I decided to take a Fixed LTE service, I had the LTE for Approximately 6 months and due to Situation changes a had to cancel it. When cancelling the Service on the 7th Feb 2022 I was informed that due to having to give a months notice the Cancellation could only be done on the 1st April. I would also have to pay a Collection fee for the Router, Which I agreed to pay the collection only to find on the 13th of Feb that they are billing me for a Collection which would only happen after the cancellation date. I queried this only to be told they can not change this. Due to this Terrible Incident I am now also cancelling my Fiber all because they would not assist with fixing the Billing issue.