One of the worst we have ever dealt with, and I have dealt with them all.
insufficient capacity at the switch, putting the wrong protocols on T1s when we specified what we wanted, turning off PRIs that had alarms instead of realizing they had an equipment failure, turn of a ds3 for maintenace without informing the customer (during business hours no less), pulling the wrong smart jack and taking out a PRI at a location.
I could go on and an and on.
Chris