This is the fastest way to disable it on the stolen phone, since you can only have an account with an associated phone number and on a single device at a time.
Eno ke tsela e e bonako ya go dira gore akhaonto e e mo mogaleng o o utswitsweng e se ka ya dirisiwa. ayoba e kgona go dirisiwa fela ka dinomoro tsa mogala tse di nngwe le mo sedirisiweng se le sengwe.