My dryer will be three years old in a month. I

My dryer will be three years old in a month. I was so disappointed when it stopped drying my clothes. The inside of the dryer would sweat and drip with water. The tub would heat up and the lent sensor would alert me that it was full. It wasn't full. I went to Lowes and asked. I was given a number. We've had a repair guy out. He says $500 to fix. A blower has gone out and something else. $76 for the trip to look. Noone around to service the appliance. The mold grows in the washer/ the dryer doesn't work! My, I wish I'd invested in another brand. NEXT 100 series set. $1700 when I purchased it. What should I do?