Builders Warehouse Account/Refund Department APPALING

My rating shouldn't even be a one star!! I have a terrible experience with regards to my RCS - Builders Warehouse account.

It all started with my December 2017 account where RCS announced that if you pay your account before the 30th of November you don't have to pay (free month) for December. As my account gets paid by debit order on the 26th, I automatically qualify for the free month off December 2017. But when I received my account for January 2018 it shows on my statement that I'm one month in arrears (that I didn't made a payment in December which was RCS promotion to get one month off). With that they charged me my full instalment in December 2017 for the amount of R169.00 as well as "interest" and "fees" which amounts to R85.72. As I phoned RCS there was a recording stating that they have made a billing mistake with their December month billing and if you were a customer effected by this you must speak to a customer care consultant. The consultant assured me that the matter will be rectified before the 26th and before my debit order was deducted. This was never rectified and the full amount of R338.00 was debited. February my set debit order amount changed from R169.00 to R190.00 (R21.99 more for a collection/notification letter - which was never my mistake in the first place!!). February 2018 the amount off R190.00 was debited from my account. My account was still not rectified after three months which was never a mistake on my part and Builders Warehouse kept on charging me. March 2018 I decided to settle my Builders Warehouse account. I phoned for a settlement amount which amounts to R1970.05 and paid the full settlement amount 06/03/2018. When I phoned for a closure letter the consultant advised me that I have paid to much and there is a credit of R158.98 which I said they must refund me. After forwarding a copy of my ID, proof of settlement and my bank statement where the debit order amount shows for the credit they did refund me on 06/04/2018 (one month later) the amount of R1 970.05 (my settlement amount) and not my refund of R158.98!!! I waited for a statement from Builders Warehouse to see exactly what is showing on the statement and this morning 18/04/2018 I received the statement showing that I owe Builders Warehouse an amount off R1 876.88 over 36 month the amount of R127.52. I phone one again the Customer Care Centre this morning and after transferring me from person to person I ended up with a person by the name of Fazley (Ref. No.: ********** 00691) which spoke to his "Team Leader" and after 50 minutes they advice me that there is no credit owed to me (so I don't know where the R158.98 disappeared to) and also I have to settle the amount today which is R1 888.09 with "FEES"!!!!!! I have never experience such bad service and ridiculousness in my whole life!!!! After I settled an account in full they pay me back my settlement amount instead of my credit and then charge me for it!!! PATHETIC!