Agero Reapplying to job. Wrong past work history data. Sault ste marie Ontario

I reapplied for job at Agero and they denied me. When I asked why they said i had abondoned work after 2 weeks. Now I remember plain as day telling supervisor i was quitting right in front of the floor. Thats not the funny part. I actually worked their for 3 months during the summer and was taking VTO or verified time off when call flow dropped. I even told the name of the supervisor I told i was leaving to the recruiter and she just said ya I know him. I have no clue what is going on I assure you I am not lying. If anyone plans on leaving a call center job, I suggest getting written documention stating you notified them. I have worked else where and seen first hand how call centers marginalize people. As team lead at another call center i was apart of the clique and watch people get sobotaged that were not liked. Basically these people were qualified to lead a team but noone wanted them to so they would "recomend' not be moved up. In this day and age all our files are open to even the amateur hacker. I don't want to scare people but this very strange to me. I don't think of myself as a target but i can assure you that it is not implausible to think some hacker fooling around could easily just change info on stored file.