Was the opposing team having the same problem? If so, feedback from both sides to the umpire's assigner/supervisor may get some corrective action.
We had similar issues with an umpire we got frequently not calling the front corners. Sometimes we could get him to call them. Later on, we used it to our advantage by calling curves inside and screwballs outside (i.e. on a RHB) while our opponents struggled with his strike zone.
We had similar issues with an umpire we got frequently not calling the front corners. Sometimes we could get him to call them. Later on, we used it to our advantage by calling curves inside and screwballs outside (i.e. on a RHB) while our opponents struggled with his strike zone.