Vodacom Vumatel fibre network

I had a fibre network contract with Vodacom. I complained that I wasn't getting what I paid for because the internet was bad. I then notified them that my contract has expired 30th of August 2024 and they requested 30 days notice period. I agreed and they said cancellation will be effective end of 01/10/2024 October 2024. They stopped the internet but did not release the ONT. I can't engage another service provider because my line is not released despite several emails and also when you call no one answers. You will need a day to work Vodacom. They just stopped internet and I am *****ed my work is suffering just because they are holding onto the ONT. 8 days now I still cannot engage another service provider despite requesting 30 days notice when the contract expired.