I used to go to the trouble of looking up the company's own sales contact or cxo or whatever and subscribing them to themselves, but now I just close the tab.
I remember in the early 2000s I started getting junk fax calls on my phone at least 4X a day. It got so annoying that I took time out of my day to get revenge. First, they made the mistake of sending it from the same number each time. So after some investigation, I identified the name of the company and even found the CEO's phone number. Unfortunately for them, I was an early VOIP adopter and it was relatively straightforward to set the PBX software to forward all calls from that number to the CEO's phone. The calls stopped happening within 48 hours.
I remember in the early 2000s I started getting junk fax calls on my phone at least 4X a day. It got so annoying that I took time out of my day to get revenge. First, they made the mistake of sending it from the same number each time. So after some investigation, I identified the name of the company and even found the CEO's phone number. Unfortunately for them, I was an early VOIP adopter and it was relatively straightforward to set the PBX software to forward all calls from that number to the CEO's phone. The calls stopped happening within 48 hours.