Damelin Pretoria City

Hello my name is Hlamalani Pandeka, last year 2018 I registered with Damelin Pretoria City then I attended for just a month due to financial problems I had to drop but they never called me asking about my account, and this year 2019 they called me and said I must come and cancel my contract and when I went to the school they refused to cancel and say I owe them R34 385.01 but I dropped out please help.