ringing off the hook (vp)

His phone has been ringing off the hook with calls from people who want him to do work for them.
The phone kept ringing off the hook, each call more persistent than the last.
As deadlines approached, the office phone was ringing off the hook with urgent queries.
Exhausted, she unplugged the landline to stop it from ringing off the hook during the night.
The excitement was palpable as the celebrity's phone rang off the hook with congratulatory calls.