hang-up (vp)

He started shouting so I hung up (on him).
Let me speak to Melanie before you hang up.
After a brief and frustrating conversation, he couldn't contain his anger and gave a loud hang-up.
In the heat of the argument, she regretfully resorted to a hang-up, ending the discussion abruptly.
Dealing with constant hang-ups during the cold-calling campaign was a common challenge for the telemarketers.