If you buy something from a shop, everything related to that transaction is known to the shop partners. If you talk to an automated machine over phone, everythi

If you buy something from a shop, everything related to that transaction is known to the shop partners. If you talk to an automated machine over phone, everything you say will be recorded. This seems similar, all you say to the business will be logged by Facebook. But not because you use WhatsApp, but because the business choosed Facebook to "help" with all its transactions. If you talk to a business via telegram/Twitter/matrix/etc, and the business uses a Facebook backend, all you say can be recorded and used by Facebook. By business I'm referring to WhatsApp business accounts.