Bad customers service and wrong billing

Good day <br> I have been in contact with MBD regarding my vodacom account . I received numerous letters saying I need to make a payment of R1135.31 which i couldn't pay due to unemployment however i finally managed to make an arrangement with their consultant and their manager whom i forgot their names, they all agreed that I make a payment of R1135.31 as i qualified for their discount. I made the payment on the 2nf Of March 2016 Account Number: *** and i sent through the proof of payment to their department [Email Removed] . upon making a follow up today 8th March i was serviced rudely by 2 consultant who told me there is no manager on their floor today. the consultant told me i still owe R1015 on my account which i dont know where it is coming from. I needed a paid up letter which they are failing to provide to me however during the arrangement i was told to send my proof of payment in order for them to release a paid up letter. This MBD call center is full of unprofessional individuals, very rude, too quick to conclude a customer is being rude to them when they cant deliver effective customer service. Some must get back to me with my paid up letter.