BIS not activated

My BIS service usually expires on the 20th of the month. Due to business reasons and clients contacting me via whatsapp I recharged on the 19/09/2015. From the 20th I could not receive any messages even though my summary states my BIS will expire 19/10/2015. Have called the call centre numerous times. Since Monday they claim that they will refund me by Wednesday , called on wednesday and they say will refund me by Friday . On friday still nothing . call on Saturday and was advised my request is still pending. Ask to speak to a manager and was advised the manager cannot do anything as the request is pending. This is pathetic service from such a big company. This has affected my client service with my customers and no one in the call centre not even managers can help. Thus is ridiculous to wait over a week for something as simple as BIS to be activated. I would like this matter to be sorted out ASAP because Vodacom will not give me the business I have lost in the last week.