Sometimes when I'm trying to reach a human for customer service, and the system won't route me to a person if I use the typical techniques (multiple zero presses, saying "agent", not saying anything through multiple timeouts, etc.), I use the "mystery language" technique to some considerable success:
SYS: I cannot connect you to anyone if you do not explain to me the nature of your problem.
ME: Dasbuton terra masiqu! Bashro normani grikkola-ban-nano!
SYS: I'm not sure I understand you, will you please repeat that?
ME: Dasbuton terra masiqu!!!! BASHRO normani grikkola-ban-NANO!!!!
SYS: Please hold while I transfer you to a customer service agent.
Another technique - some systems that won't obey "agent" or "operator" will detect angry "fuck"s and other curses 😂 and route you to a human. Apparently it's basically "Is this caller frustrated enough to make trouble?". I have found it to work a couple of times when nothing else did...