Call your carrier's retention team or switch to a prepaid/MVNO plan
Added
Consumer Reports suggests calling your carrier, saying you want to cancel (which routes you to the retention department), and asking for a one-time loyalty credit and help finding ways to cut your bill. If that fails, budget providers (MVNOs) run on AT&T, T-Mobile or Verizon networks, so pick one that uses the network that works at your home. Don't cancel the old service until your number has moved.
The result
Result: Consumer Reports says MVNOs generally cost less because they skip perks like streaming bundles and phone-financing deals and have fewer stores.
Note: Not financial advice. General information only; check your own situation or ask a qualified professional.
Source
Consumer Reports (opens the original source in a new tab). Check it for the latest numbers before you act.