Yes. If you are dissatisfied  with TalkTalk broadband service,you may now get a refund without penalty since the company has committed to follow the Ofcom broadband speed code of conduct.
Remember, not all TalkTalk issues call for cancellation. Local network connection issue causes TalkTalk TV error code yvm102. To resolve this, go to broadband connection within your settings menu and go through the setup journey to reconnect.