You see a count of zero for reads in AMC, asinfo and asmonitor.
Batch reads are not tracked with these tools. Most likely the customer is using batch reads.
This can be confirmed by running :
asinfo -v stats -l|grep batch
The Number of reads should show in batch_initiate (Cumulative value since service started)
**batch_initiate=7331503;** batch_queue=0; batch_tree_count=0; batch_timeout=0; batch_errors=0;