where to now

this will be the second complaint for best home and electric. I bought a lounge suite in December 2018 and waited months for it to be changed because it was not up to standard. I was advised on which lounge suite to take which was R2000 cheaper than the first set I bought. after a long process I finally got a new set and the manager was supposed to adjust the account accordingly because the second set was cheaper than the first. up till today nothing has changed on the account. the instalment amount is still the same and I believe that the manager at the store that attended to the matter has since left the job and there is a new manager in his place. this is the branch in east London, oxford street. he promised to adjust the repayments on this account as there was a R2000 less owing on the new lounge suite. nothing has materialised to date and this has put me in a predicament with the credit bureau from purchasing anything else because im listed as a bad payer. I keep receiving calls and letters of demand which I think is totally unfair when my account was supposed to be fixed a long time ago. this R2000 less owing on the original account will take care of the arrears that have now accumulated. im really frustrated about the way this issue is being dealt with. it leaves me in a position where I don't qualify for credit anywhere because of this negligence. Mrs R Buntting