I notified TalkTalk early March I was terminating the contract 23 March 20, for which I had a confirmation email. The porting of the BT number was delayed, due to the virus and staffing.
My new provider, who I can contact easily by phone, set up a temporary new telephone number, until the porting of my BT number could be sorted. So my previous BT telephone number has not been in use since 23 March 20.
TalkTalk still insists I am still with them and keep sending me bills. I am unable to speak to anyone on the phone (so TalkTalk needs to find a way of talking to their customers!), even with home working this is possible. The message is on the phone because of the virus it is a reduced service. Surprisingly all other firms I have dealt with at this time of the virus, are easily contactable and can speak to customer services, so why is TalkTalk any different?
You cannot reply to any of the emails sent to you, neither do they provide a customers email address to write to. I eventually found the address of TalkTalk and sent a recorded delivery letter, for which I've received no reply.
I would not recommend TalkTalk to anyone and I am letting as many friends know as possible to warn them. SO get out of your contract as soon as possible my advice.