(Strip Number 4077, Original Publication Date, 8 October 1981)
Panel 1: Elly, who's holding the phone bill in her hands, has her eyes bulged out in existential horror because she's received a late payment notice; the standard "This payment is past due; please remit amount immediately or service will be disconnected" wording alarms her.
Panel 2: She then thought-bubbles "Look at this; I don't deserve to be treated like this! I've she's been an excellent customer!"
Panel 3: She continues on by thought-bubbling that they never praise you for paying on time but if you slip up once, you get insulted.
Panel 4: She then yells "See if I ever use the phone again!" at the kitchen phone.
Summary: The problem, of course, is that Elly doesn't realize that they're not out to get her; they just expect her to pay the phone bill on time like everyone else. This comes into play tomorrow when she doesn't see that they can't actually afford to not treat her like a number.