Poor service who still uses a cheque nowadays!!!

I rented a flat since 2011 July until last month. I have been such a loyal customer to City Property. When i moved in i completed my banking details on the applicatiion form and now that i am moving out they telling me to come collect a check at their offices. I moved to Johannesburg. Why must i go to Pretoria because they still want me to spend after they over charged me for things i do not know. When i completed the exit form with the building he told me i will receive the refund of R3250, now i am told i will only receive R2900 because of the water that was paid late. Every time when i paid the rent water was included. The consultant even laughed at me and said because its money i should come get it, why am i complaining !!At this moment i am completely disappointed and will never refer any one to your company. I want my money you managed to sms and email me about the survey why did'nt you not request my banking details. I want my money transferred in my account latest tomorrow. Your service is so poor,after you received the rent money you treat people like nothing!!!!!