Lewis furniture in kokstad

Is there no law that stops Lewis furniture shop from selling to pensioners on accounts knowing very well that old age grant is not enough for a person to even survive till the next month. My mother is a pensioner I just found out she owes Lewis Kokstad branch R20000. Now they are harassing her even threatening to take her livestock my question now is that from the R1900 that she gets with 7 grandchildren Lewis is forcing her to pay R900 what is the old woman supposed to eat? They gave her a tv, a bed and a fridge in 2019 a year later the tv was not working they refused to fix it but they still harassing her for payments you are exploiting old people your sales department targets them on purpose knowing very well they won’t understand the terms and conditions of your contracts that are written in English which by the way they don’t understand