delete my skydrive free account

I have a trial version of SkyDrive - I tried so hard to get help to delete that account since it had create conflict with my paid Microsoft office 365 university, whenever I want to use the 365 university the free SkyDrive open and save my work. I hate that **** and ask hundred time for that airhead people work in Microsoft office to delete that extra-unwanted account but no help at all. Those workers are dump and sooooooo stupid, God dame Microsoft Bureaucrat - forget to mention for the last half year I tried all path to solve this stupid problem