I'm on COBRA, in May I was paying $498, when I got my bill for June (in May) I was informed the my rate for July it would increase to $533. I received my bill for July and I was charged $508 as was the bills for Aug. and Sept.. I received my bill for Oct., they
"corrected" the bill to $533 plus an extra $106 because they say there comp. sys. was not "up to date".. My question is since they accepted my payments as payed in full can they claim the extra money if the mistake was on there side?