*********** staff and extremely poor service

I bought hisense side by side fridge on the 5/12/2015 iwas given 483 she assured me wont be more than 500 estimated monthly fee including service fee and insurance Melissa assured me that my instalmet will be fixed for 24months, on the 15/12/15 I received a statement for an amount of 751.70 monthly ,when I called their call centre masha told mecan only see 559 on the system I went back to the store Melissa transfered me customer service I spoke bahyiah Daniels who told me the amount on the statement is correct and my instalment is revolving not fixed then put me on hold for an hour while I was holding call transfered to Natalie without informing me I had to explain my story again she also gave different amount of 474.70 monthly instalment she was very rude she offered to call me back without answering any of my questions till today I'm still waiting. All I need to know how much is my monthly instalment and the 24months fixed instalment I was promised by Melissa Windhoek , I didn't ask for revolving . as customer I have every right to know andgame must deal with their *********** staff how to deal with customers, word of advice give them training on your products.