NHTSA Complaint #11524573 — 2011 KIA FORTE

I have a 2011 Kia forte had 130,000 plus miles when I bought it. I've had the car for 1 year first 2 months motor sound it 100% 3rd month I started to hear a knocking sound coming from motor I took it to kia dealer today for recall service so I asked them if they could here the knocking sound they told me that the sound was normal. I told them that when I got the car it wasn't making this knocking sound and getting louder each month. They changed the conversation and told me that i was there for them to work on a recall matter for my car. i don't know what it could be maybe the engine pistons idk but I have read a lot of people with this problem as well car has 145,500 miles now I have the oil and oil filter changed every 5,000 miles. I really think that this needs to be investigated asap as this could cost an accident if car brakes down.