How to I stop the Constant Spam call, that leaves a message :" Sorry I can't hear you" THese messages come from numbers all around the US many times a day.
Using the RingCentral Phone for Desktop, you can dial or receive test calls, send and receive test SMS or Fax messages in your sandbox environment.
Download RingCentral Phone for Desktop:
Tip: switch to the "sandbox mode" before logging in the app:
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