I have a similar problem with mine KPM (useless gits) and was thinkin of doing what you are saying, witholding payment.
The management company are tryin everything to divert the problem ie lack of funds etc which is always the same excuse, yet the complex goes south as a result. Funny enough the culprit in question was on Prime time last week bangin on about lightbulbs...any excuse as i said.
I was at my first AGM about a month ago and nothing came of it as most of the resident were paractically shouting at the table. Most residents complained of not being notified of the previous AGM's as they felt their voice was being filtered out by these gangsters so they could carry on doin nothing whilst taking money from residents and not maintaining the area properly.
I myself have sent email after email of certain issues needing attention. They are never anwsered. Everytime i call, im given a different representative and they never get back. So what am i paying for exactly?
When i first moved in, they witheld all nformation about the residents committee, the caretaker, their responsibilities as a management co. etc.(I bought secondhand so i didnt get an introduction from them).
Im at a loss to my rights and some advice would be advantageous.