Disgusting service from foshini

I bought a lounge suite on the 16th November from at home online on an early black Friday special. . They delivered after 2 weeks, I requested a right hand corner unit because the left hand one did not fit properly, they took it back and never did the swop. I called numerous times to get help but was pushed from pillar to post, finally I wrote a write up on Hello peter and got noticed, it took a while before they could resolve the dispute because they wanted to charge me the full price whereas I bought and paid up half the amount on the 16th. After alot of phone calls and arguing, they finally sent me the goods on the 27th of December, I paid my monthly installment and only noticed last month that they are charging me interest, if you look at the history of my account going back over 25 years i have only ever bought things on 6 months interest free, i spoke to someone in customer care today who simply can't understand English when I explained my problem, I called back to speak to the manager and had no luck, i am utterly disgusted at this attitude from a loyal faithful customer who has always had an update to account, i am going to go to the consumer council because I work hard and can't be ****med out of my hard earned money. No words can describe the disappointment I'm feeling at this blatant *****ing, how many other people have they ****med like this, horrified.