July 23rd I sent an email to the landlords relator about the condition of the A/C unit. I told them I had a friend fill the unit with freon for free and a couple days later the unit was blowing out warm air again. They finally sent a guy out on Aug 6th. I couldnt get a hold of them again until Monday when they told me all that was wrong was that the freon was low so they refilled it. Thats what was wrong in the first place. On the 9th he said he would be sending the A/C guy back out and I still havent heard anything. What should  I do???