BOND ACCOUNT

I bought a house with my partner through ABSA in 2012 and started paying for the Bond in March 2013. Things between me and my partner did not work out and we decided to part ways and sell the house. Firstly the Bond was/is deducted under my ABSA account everytime I get paid. I HAVE been paying above 4600 and now I am paying R5600.00 but I have been informed that after two and a half years of paying the balance of the house is above the amount of money that we spent to purchase the Bond. Infact the cancellation is R529 000 and it will leave me with a debt and now I have to apply for a shortfall as my partner is no longer taking responsibility. I feel ****** by the Bank and I am still confused as to how the amount is above what we paid to purchase the house. I was hoping to buy property soon and now I am faced with debts in all angles just to clear my name of credit beauax