Very frustrating feedback system for Turkish Sirways

When I attempted to correct a departure date regarding an online booking, I cancelled and restarted. The original booking, made one minute before the second, was not fully refunded. The only way to address this is on a very frustrating online “feedback”. Turkish Airlines did not read my feedback, and fired out a response that “since I received a refund, my concern was addressed”. When I sent my second query, they responded that they do not change any previously made refunds. Fortunately, my credit card company (Chase Sapphire Reserve) immediately resolved my query, and I received a full refund- no thanks to the faceless online booking department. Unfortunately, this reflects poorly on those Turkish Airline employees who give a great service.