Home- Connect Termination

After almost 3 years of using Home Connect, I tried to cancel my subscription with the, firstly the website couldn't authentic me, even after I changed my password numerous times 2 calls later and 90mins wait for the system to refresh I was able to login. While processing the cancellation, I noticed that the cancellation date is 01/01/2023 while processing the cancellation on the 01/11/2022, on the website it states that I need to give Home connect a calenda months’ notice. I got on the call again and the agent quickly informed me that their definition of a calenda month is that I need call before the 1st of the month, which is different to the legal definition - ‘the beginning of any given month to the end of the same month, with the result that notice may be given on the first day of the month and will continue until the last day of the month – Bowmans’. Unfortunately I don’t find their definition to be correct and I expect my contract to be terminated on 30/11/2022.