Paid and still you send me reminder sms

I paid my vodacom account yesterday(11 feb) got a sms from you to tell me no proof of payment required(got the payment),but after I made payment you still keep sending me sms messages to remind me to pay(what's wrong with you people,can't you read your own system?)<br> <br> And please,this is starting to began now A PAIN IN THE ASS,TO ASK EVERY SINGLE MONTH FOR YOU<br> TO SEND ME MY MONTHLY STATEMENTS(just do your job!!!)<br> <br>