We previously sent you a letter concerning your inquiry received May 10, 2006. Although we try to respond quickly, extensive research is often required. At this time we are unable to provide a complete response because:
Due to heavy workload, we have not yet completed our research necessary to resolve your inquiry.
Please allow an additional 45 days for us to obtain the information we need and to let you know what action we are taking....
If only I knew what the heck my inquiry was supposed to be!