ring off

verb2

1. •
   (UK, Australia) To disconnect at the end of a phone call.

   • I thanked him and rang off. — 2010
2. •
   (slang, old-fashioned) Buzz off; go away; shut up.

   • [S]he's not a Bloomer / But knows when she's got you at her wire's end. / It does no good to fret and fume and scoff, / For she all protests meets with "Oh, ring off!" — 1894