Billing issues

Having billing issues again with telkom! I have paid R3500 end of January its middle February i dont owe telkom a cent but yet they switch my line off due to none payment, so please let me know how does this work, should i pay daily, weekly or monthly??? This is so frustrating! Everything at home works from internet. I am really thinking about switching to afrihost, a family member is with them and they not siting with half the frustrations i am sitting with. Please resolve this matter and credit my account with the down time.