I updated the telephone number of 3# on the speed dials and clicked on the SAVE. However, after two hours, when I pressed 3#, it dialed to the old telephone number.
For test purpose, I added a new 7# speed dial for my cell phone. When I press 7#, I heard the Google Voice lady said: "We could not complete your call, please try it again."
All the old speed dials worked with no problem. Only updated and newly added speed dial had problem.