Turismo Pichilemu is the one agency in town registered across the full spread — general tour operator, birdwatching, cycle touring and hiking, five SERNATUR entries under the same name. If you want something other than surfing out of Pichilemu, they are the obvious first call.
They sit on Federico Errázuriz in Barrio El Llano, a couple of streets back from the beach. Contact is a mobile and an email address; there is no WhatsApp anywhere on the site and no price list.