My question involves collection proceedings in the State of: Illinois

The management company for my home owner's association forget to bill me account for two years worth of garage parking for one of my cars. I did not realize the error because I thought the parking was being charged to another account for another unit we own in the same building which my husband handles. Two years later, the management company realized its error and placed a $3,600 charge on my account for two years worth of garage parking. Is there any law about how far back someone can get billed? Does the management/billing company have an obligation to send reasonably timely invoices?