I feel like I'm being ****med by DMC Debt Management

I was owing capfin and I lost my job, the account went into arrears and it was handed over to DMC debt management. I received their call and they gave me two offers in a form of a discount , one was to pay 50% of the money that I was owing which will then settle my account and the other was to make an arrangement and I opted for the one of making an arrangement of paying R1000 for 6 months. They have been debiting money from my account since January till July, yet the arrangements I made with them as per their discount was ending in June, when I lodged a query the consultant tells me that she can't see any arrangements on the system yet the consultant that I spoke to last week agreed and said she did a notice to close my account and to ask for a refund. Now the consultant by the name of Ntombinkosi is telling me a different story. What ****es me off is that she even hanged up when I was the one who called. She's now saying that I need to pay the outstanding balance which was not part of the discounted arrangement. Please help because I feel like the consultants or the company are/is *********** and they are ******** us.