TCS — TCS final settlement

Have been out of tcs for last 3 months and I didnt received my TCS final settlement yet when i try to contact my allocated manager she never responded at all and when I try to login into the alumni portal I dont have any credentials to do it but when I opt to change email otion it os asking asking the security question that was set 4 years ago which I forgot so I have been trying even by raising tickets too but there is n resolution