I just spoke to a very helpful lady at 10210, and I explained that I am unable to watch Netflix on my TI account at all and this is the main reason for me having an ADSL account, and therefore I need the account cancelled immediately so that I can move to another ISP. She obliged and my TI account is no more. In short the 30 Days notice story is utter BS and can be gotten out of.
It is utter BS, do note, they will still charge you for it the next month if you cancel this time of the month, but they will credit the money back to you the next month.