Simple request, difficult to execute

I've had the most unpleasant experience trying to move address with Home-Connect. I initially logged an address move for the end of May 2022, but had issues with the new house transfer so it was taking longer than expected. I then decided to postpone the cancellation at my current address until the end of June 2022 and move the activation of the new address to the 1st of July 2022. This was confirmed numerous times via telephone with multiple support consultants over the period of a month. I even phoned in twice on the 31st May to confirm that my line will not be switched off at my current address at the end of June. All confirmed that it would NOT be turned off. Guess what happened last night 31 May 2022? My line went off. This was even after a lady told me on the 31st May to send an email to their customer care email as well, which I was also assured would be read and actioned. I then had to phone in this morning to find out that this was never communicated to Vumatel and that my line was cancelled on the Vumatel side. This was then rectified reasonably quickly and my line was back up again. Shortly after this was done I received 2 emails from Home-Connect, 1 that my current line was cancelled and 2, the new application was successfully processed. Now I have been speaking to 3 different consultants this morning already, all promising me that they will phone me back, just like the ones promised yesterday, and not a single one of them have the decency to ever call me back. I am sick and tired of dealing with your support team and their total no care attitude. If my issue isn't resolved by the end of business today you can process a cancellation of my new application. I am done dealing with people that frankly JUST DO NOT CARE! I have a simple request, cancel my current connection at the end of June 2022 and start my new application (at the new address) on the 1st of July 2022. How hard can this be?