Called ABACUS to see if they Can come to fix my A/C and they got me an appointment the same day. An hour later, David Nieves came knocking on my front door. David was very polite and courteous, he diagnose the a/c unit right away and told what was wrong with it and took care of it right away. Outstanding customer service and I will definitely use them again and very highly recommended. Thank you again ABACUS and David Nieves for great service.