Fatigue; Communication Breakdown; Situational Awareness
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy; Ground Event / Encounter Ground Equipment Issue
Flight Crew Diverted; General Flight Cancelled / Delayed
Procedure; Human Factors; Aircraft; Company Policy
On the night of July XX; the lavatories stopped working. I made the decision to divert the aircraft to ZZZ to get the lavs serviced. Once on the ground in ZZZ I was contacted by NAME and the manager on duty of Operations Control. NAME was not professional during the call; placing all of the blame on me for the situation. I unfortunately had to deal with the situation because the lavatories were never serviced in ZZZ1. I was upset; annoyed; and disappointed by the attitude of the director of Operations Control. I was berated and interrogated by him for the decision to divert. What was needed in this situation was assistance from Operations Control and Dispatch so the flight could continue. Due to the unprofessional attitude from Management and the blame being placed on me for the situation I was unable to sleep soundly when arriving in ZZZ2. when we departed ZZZ2 I felt fine; but as the flight continued I started to become fatigued. When I landed in ZZZ1 I called Crew Scheduling and told them I was fatigued for Flight XXXX to ZZZ3; and removed myself form the flight for the safety of the passengers. This was caused by ZZZ not servicing the LAV; leading to a diversion; and the lack of professionalism from Operations Control leading to lack of sleep.
EMB-175 Captain reported hostility and unprofessional communication when contacting Dispatch and the MOD after a decision to divert for lavatory servicing caused by departure airport ground agents not servicing lavatories before departure.