VRL Travels — changes in reserved seat

Address: 560016

I was traveling from bangalore to badami on 12th june n had reserved my seat for u6 a week ago or more, n was waiting for bus at yashwantpur vrl stop. One of the vrl management person calls at 9:30 n say "the behind seat glass has blasted n glass pieces r on the seat can u move to other ladies doubl seat" with this i could understand that something happened to my seat.. But when the bus arrived i saw my seat u6 was all fine n it was given to a guy. When i got into bus they asked me to take double seat with a lady.. I asked y my seat was changed.. When there is no issue of any glass pieces.. They said the other truth that last seat glass has blasted n d passenger who was in the last seat has been moved to my seatu6, though there was last second seat l which was fine n free.. I told i am not comfortable in double seat, give me back my seat.. The management n driver were asking me to adjust to last second single seat instead of asking the guy to go back.. This guy had booked the seat at last min n he was not ready to go back last seat.. Where as i had booked my seat a week ago.. The management compromised my seat to a non reservation person.. How is this justifiable

I need a answer to this.. The system n management is getting worst with tis..