Berlitz Istanbul WhatsApp Customer Service Does Not Reply

I am extremely dissatisfied with Berlitz English Language School in Istanbul. When I contact them through WhatsApp, they do not respond to my messages, and they have also disabled WhatsApp’s read receipt feature. I am extremely disappointed with Berlitz and want a responsible representative from the institution to contact me directly.

If I do not receive a response, I will also file a complaint with Berlitz Global. Why would a well-established company not respond to customers through WhatsApp? How are we supposed to get information about course prices or learn about the services you offer if you do not respond to messages? Why are you not answering? If you are not going to use WhatsApp to communicate with customers, then why have a WhatsApp contact channel at all?