Bad service and attitude

I bought a lounge suite in January and never got the option to choose when I want payments to be taken from my bank account so they just assumed they can take it on the 25th of each month. Yes, I said payday is on the 25th but it takes about a day for the money to be transferred into my account so I didn't get it on the 25th. I asked them to change it but that never happened so I went to my bank to take the debid order off. Ever since then (just about 2 weeks ago) I've been getting phone calls from your people saying I am in arrears and that I must make a payment of R1500 +- when my installment is a little over R1200. Firstly, everyone who phoned me need english lessons and manners. They are all rude. Secondly, send me statements please. And correct the installment amount. Where did that R300 come from? And you aren't allowed to just take extra money as you please after the installment. And I would like to remove ALL insurance **** you added to my account. I just want the couch. And I'm not planning on dying any time soon so remove the life insurance **** AND the other insurance you just added without my permission. You can't tell me I have to have that insurance (consumer act).