Deposit refund

I was renting one of their apartments from 1/07/2014 to 31/12/2014. After moving out I was informed that the stove is not working, which I couldn't agree with as the stove worked when I stayed there. On the 29/01/2015 I received an email from Anne-Marie saying the issue has been finalised and my deposit will be refunded the next day. I called their offices on Monday 02/02/2015 to confirm if the payment has been made, she coldly told me she was not at her desk so the payment hasn't been made. I called again on Tuesday 03/02/2015 she told me the payment has been submitted to Finance, later that day she sent me an email saying they cannot pay me as the stove matter is not resolved. This is an inconvenience, after being notified that they will be paying me I made other commitments for the money , only after following up with her a number of times she sent an email telling me they have not resolved the issue. I never had issues with the stove over the 6months I stayed there, I find it strange that it stopped working after I left. I don't understand how I could be held accountable for breaking a Stove. this is a maintenance issue , which they also confirmed.