Sandy, I assume that you are talking about being in arrears of your monthly assesment fees, do you have your records to show that things are in order on your part, and if so ask them in writing that you want to see your files which you have every right to do.If they have made an error ask for a written apology from the management office or their district office manager. A letter from your lawyer would also go a long way to solve this problem, as they do not like dealing with lawyers.Just make sure that you get every thing in writing from them, and clear this matter up as quickly as possible or they will put a lien on your unit.
Also take some time to read the Ont Condo Act which can be obtained on line for some free advice
Good luck
PS we are also Condo owners