unfair billing.

My name is Bridget

I have a problem with this DSTV company, i normally pay on the 27 of each month. Yesterday i couldn't pay because of personal reasons. Now this morning they disconnected me and when i call them to inquire they tell me that i owe them R9.20 +R315. My monthly installment is R265 but they already put me in penalties, they are people i know and some i work with they don't pay exactly on their due date but DSTV still give them 5 more days to pay their bill. what is the different between your clients that doesn't make us pay our penalty the same way.