********** services misleading advert .. force

So kwa mashu branches in durban ... i went thete to buy a wall unit ... not knowing my brother has a outstanding payment on his name i was told if i want the wall unit i must pay my brother account ... so i said i would ... then they told R 590 that will be debited from my account so now im paying to accounts .. i later told them i cant not afford it .. they said we neef to speak the accounts managers until now they have not assited me .. im thinking of returning their wall unit and changing my account