You Snooze, You Lose
Have you tried accepting a job via phone and thought it wasn’t working? If you do not receive a response after trying to claim a job via phone, this means the job has already been taken. Likewise, if after you log in to your account, the job is not in your calendar anymore, it was most likely accepted by another sub.
When accepting jobs, it is important that you act as quickly as possible. Waiting for any amount of time makes it more likely that someone will accept it before you. This is like a game of “tag” after all and speed is of the essence! Remember, the faster you respond, the more likely you are to get the job before someone else does.