This company should hang its head in shame!

Having made a reservation enquiry, nothing more, my wife and I decided not to proceed with a booking. Safari Now sent a reminder that the reservation would expire. I considered that on expiration the communications would cease. After several more emails from them, I looked for an unsubscribe or opt out option on their website but none exists. I then emailed them asking them to desist contacting me, to no avail. I tried calling their Cape Town office but the number on their site ***, garners no ringing tone. I finally looked online at the overwhelming number of critical reviews, with so many highly critical of their customer service and total lack of interest in responding to complaints. How on earth does such an abysmal and inept company continue to operate?