FNB Unacceptable Service

I am very disappointed in the service I got with FNB for the past month. On numerous occasions have I been trying to speak to one of your Consultants in the Life Policy Department and no one up until today has gotten back to me. I have sent complaints email and also no one to able to assist. How can you double debit on my Life Policy without notifying me. What reason did you have to do this. Last month you deducted your premium so Who gave you the right to deducted a double debit. The service I got from FNB is Pathetic. If I do not receive an answer today, I have other option but to take the matter further