Check the mail. Nothing. Check the mail. Nothing.

[Phileksa]

"You need to pay your bills."

Check the mail. Nothing.

"You need to pay your bills."

Check the mail. Nothing.

"You need to pay your bills."

Check the mail. Nothing.

"You need to pay your bills."

Check the mail. Nothing.

"You need to pay your bills."

Check the mail. Nothing.

"You need to pay your bills."

Check the mail. Nothing.

"You need to pay your bills."

Check the mail. Nothing.

"You need to pay your bills."

Check the mail. Nothing.

"You need to pay your bills."

Check the mail. Nothing.

"You need to pay your bills."

Check the mail. Nothing.

Repo man comes.

But you didn't let me pay the bills!

What. The. ♥♥♥♥.

Now half the house is missing.

What. The. ♥♥♥♥.

That, by the way, after the thief managed to escape in spite of the fact my sim was waiting for them. Over and over and over and over and over and over again.

What. The. ♥♥♥♥.

Why would paying bills options disappear? And why can't my sim, who's a top athlete, and also brave, not stop the thief? And why do I have to watch my house being vacuumed away for repossessions when I'm not allowed to pay any bills?

[Vectorgraph]

You might have a glitch in the house lot, or conflict of interactions in queue or glitch of the neighborhood location of the house is glitched (sometimes fixable from Edit Town).

Try this:
http://sims3.crinrict.com/en/2012/11/mailbox-doesnt-work.html