GA Real Estate Law & Homeowner Association Issue?

Anybody familiar with GA real estate laws? I signed the agreement to pay for homeowner association fee monthly at the attorney's office for the closing. The policy copy I have states that the fee includes grass cutting every other week in summer and yard maintenance.

I wrote the homeowner association several times to complain about my grass was not cut, while others were. The homeowner association has never responded to my letters. I wrote them a letter this time stating "I would stop paying the fee starting the following month, if my grass is not cut within the next 3 weeks."

This letter was sent out about10 days ago. So far my grass has not been cut; I have not received any responses either. I am just wondering:

Is it legal to stop paying the homeowner association fee, when my letters were ignored and the homeowner association has not fulfill their duty on my property?

Thanks