This is probably how people who never pay their debts think.

"It's ok if I am late with the bill, they will feel bad for me and never risk me reputation damage by airing out my debts".

But in the absence of a sense of responsibility or obligation, shame might be the only thing that might work to make them fulfill their obligations.

No giving notice is public service against fraudulent organization. It indicates clearly that only proper way to operate with such organization is payment before service is provided.

Paying your bills should be first priority. No excuse, no crying. If you fail, fully own to it and terminate the chain of command involved.

Some companies love to blame vendors for their own non-payment. The blameshift works when users only have the company's (the actual customer's) word for it.

Having basic transparency like "this service is in read-only due to nonpayment" really helps internal users to realize the company is being a bad customer. Which then pushes the company's reps to actually pay for the service.

So, no it's not inexcusable.

If the bills are indeed not paid and the reason I don't see why it's "inexcusable". As long as you're not claiming they can't pay them or haven't paid them out of malice without proof you're just being truthful.

Keeping quiet when it's something simple is more weird to me. God forbid someone assumes massive corpo X is going bankrupt because of a web hosting bill..