The fact is that the AC service that the HOA has contracted to do the service isn't doing the job they are contracted to do & are not even available to get in contact with. The board needs to be made aware of this so that they can take measures to contract with a company who will. It's actually the board of the HOA who is responsible for providing the contracted help that is needed to be done for the homeowners.

No wonder the AC lady yelled at you for going to the HOA & through them. They don't want the HOA to know what a bad job they are doing for fear of loosing their contract which is EXACTLY what should happen.

Don't worry about getting bad service if you say something. That would be manipulation on their part & further reason to report them to the board. Stand up for the quality of work you deserve the HOA to provide you. If you are having this problem I'm sure others are too & if necessary, do a survey with the owners to see what all the complaints are. Something the BOD should be doing on their own from time to time to make sure things are running the way they should. You are paying for this service through your dues....you are entitled to the service you pay for & don't let them intimidate you into feeling that is wrong