Really wondering about BVW as a property managemen...

Really wondering about BVW as a property management company where we lease. We have had four tickets for a gas fireplace that is so noxious it sets off the carbon monoxide alarm. Each time we file a ticket, they visit, fix nothing and close the ticket telling us to reenter the ticket if we are not satisfied. Similar on a filter three tickets closed, still not replaced. Then we had a problem with their billing system. Apparently we entered a digit wrong - late fee. We worked with their personnel to corrected the digit and THEIR SYSTEM RE-BILLED THE WRONG ACCOUNT - so they charged us a bigger late fee. So, I went in and gave them a check that day, before the 5th. It turns out we need to pay by the 1st but they don't pay the owner until the 15th. When we asked them to waive the late fee we got a response they needed to check with the owner?!? The owner isn't assessing this fee, BVW is. Not happy with the poor service and being nickel & dimed.

Edit - BVW's response to this post is factually wrong. We spoke with the technicians who came in and evaluated the fireplace - and saw the measurements on their instruments that showed excessive unburnt fuel as confirmed b ythe carbon monoxide detector going off when we followed one of their instructions to run it for a few hours to "burn off" any coating on the fake logs. There was a noxious smell throughout the hall that other owners complained about. How BVW takes this info and says there is not a problem is simply dishonest. As to the payment, They are correct, I had the wrong week. The system notified us the payment didn't go through on the 11th (without explaining it failed because it re-billed the wrong account instead of the one we created with their help on the 6th) and I dropped off the check in a snowstorm on the 12th.