The Beat Goes On

Linda worked in customer support.
She hated every single one of them.
Except a guy called Kevin.
He had a genuine complaint.
She spoke to him for about an hour
Wrote down his number
Learned he had a wife.
Eventually she managed to convince her they'd slept together.
Anyway, the point was Linda hated these customers.
She hated them so much she learned how to beatbox.
She learned horrendous tunes and started spouting them out over the line.
The customers would tire of being on hold and hang up
And Linda would smile to herself.