BAD...BAD...BAD....BAD SERVICE

Last year around May until July I was unable to pay my monthly instalments at Morkels due to Demotion at work ,Month end I receive a call from debt collectors Mr Khumalo saying that I have to make means of payment or else they will take the goods ,Mr Khumalo was very understanding and I raised R1600 to pay on the following date so that my goods will not be collected and I did send the reference number as he told me and she advised me that going forward I need to do manual payment to the branch ever since September I paid 1600 October November and January 3500 ,February 1600 march 2200 April 200 may 1600.But funny enough when I check my balance including my areas instalments on April I was told that it is R10 000 and even today when I call JDG I am told that it is R10 000 and when I ask when last did they receive my payments I'm told April and the one for may it doesn't reflex I spoke to [Email Removed] on the 08.06.2015 and he said that he will update on his system and now I am receiving an sms telling me that I need to pay R8100 before the 1st of July and when I ask they tell me that it's not updated that I paid and its the branch problem so my question is im paying for nothing