Macbook 13" Early 2015 Keyboard problem

Dear Support Community,

Recently I have faced with keyboard problem on MacBook Pro 13" Early 2015. The system couldn't recognize letters between w-p(As an example when I press t, system don't recognize it. When I press twice or three times it types

“bgt5-“), all other buttons work very well. Istanbul Zorlu Apple store checked MacBook there is no liquidity problems. Also nothing wrong done by consumer. But Apple store requests 500$ to fix keyboard. How to fix keyboard or how to contact with Apple International