As Onion said in the post that you linked, he was inactive for 2-3 years. His last bill payment is shown as last paid 170 days ago. That means when he went inactive he was already 170 days behind on his bills and upon his return, the game auto adjusted his last payment date to put him right back to 170 days behind.
If the game didn't adjust then he'd be 1095 days (if he was away for 3 years) + 170 days that he was already behind = 1265 days behind.