Reliance levying late payment charges every month

I am using 2 reliance sim from last one year. from last 5 months they are charging me late payment charge of rs. 100 on both number. i do payment from my company account every month by cheque. everyone i deposite cheque on time in there drop box in reliance gallry. every time it get delay. i don’t understand. how can be person be late every month .that means there is problem with there end.
everytime the call and do mental harresment and language they use is absolutly unbarable. very unprofessional way of talking and faul language. plz take nessasery action and look for mental harreshment compentation if possible.

Nilang Cholera
s.v.p.road., Mumbai 400004, Maharashtra
Email: nxxxxxxxxc@gmail.com