This can't be done via forum staff.
Though your contract ends 4th October, the service will automatically continue, at full price on a monthly rolling basis.
The billing cycle doesn't usually correspond to the end of contract date, so remains routine.
Talktalk requires 30 days' notice. Check Ts&Cs, as if you are out of contract when you switch, that day counts OK as the cease service date.
But billing is always 30 days ahead, so it takes another month to reflect any days overpaid after the service ceased and if Talktalk owes you any money it needs to be reclaimed by you from My Account using your DD banking details, @simon1688.
Call, rather than using Chat, as Chat requires you to pick up a phone call too. Might as well do this at a time of your choosing.
All details re cancellation processes are in this article:
https://community.talktalk.co.uk/t5/Articles/Cancel-your-TalkTalk-service/ta-p/2204737
03451 720088 closes at 7pm on weekdays, 6pm Saturday, not open Sunday.
Gliwmaeden2, a fellow customer.
