Indian Railways — reservation issue waitlist bypassed

Address:

Vadodara, Gujarat, 390024

Reserved ticket from durg to vadodara from puri ahmadabad express 12843 on 08 march 2018 for 6th june 2018. Ticket was partailly confirmed pnr no. [protected] with two passengers confirmed and one wl1 and for one ticket berth was not opted. Even after three months the waitlist was not confirmed and had to travel with two confirmed berths. Asked tte at durg station and hr told that no berths are available. But three berths were allotted by bypassing my waitlist seniority. When i asked tte about this he said that he was not aware of my requirement & his duty was from badnera to bhusaval. My question is if berths are available aren't these to be alloted to the waitlist by seniority or sold to any other passengers when ttes are fully aware that wl passenger are traveling.