there is also this stupid old tech way of just politely asking for any promise in writing, ask them to send a follow up email or you send one “as discussed on t

there is also this stupid old tech way of just politely asking for any promise in writing, ask them to send a follow up email or you send one “as discussed on the phone this and that - do you confirm” But I never dealt with Comcast so i don’t know maybe have too much faith in customer support in general.