I can't access account, can't reset password, can't see account number

I switched a carrier recently,

and then realized I forgot to cancel wifi box.

I tried to log in, but my account got locked.

I tried to reset password, information can't be found.

I tried to find account number, but only shows 9 digit ending number

chatbot keeps repeating same answer over and over and over and overand overandoversandoverandoverandoverandoverandoeover

I really don't want to make a phone call becasue I feel bad for the customer service people when talking about cancellation lol

what do I do now