Telangana State Road Transport Corporation [TSRTC] — Improper behaviour

I have reserved seat no 5 yesterday dated 10.06.2022 service no 7605 at 6:10 pm from JBS to Nizamabad
My seat was occupied by another person and I requested him to give my seat but he denied and argued with me, even driver and another person didn’t support me and told me to sit somewhere else, already bus was late by 1.5 hours and I have to sit somewhere else by giving my seat which I was reserved to someone.
Really shameful