Nedbank robbing accounts

It is now more than a month that I am struggling to get Nedbank to get back to me after I lodged the complaint and even got a reference no. The ********ly deducted money from my account and refuse to refund me. They are quick to deduct and then ignore one's request for service. Poor client servives from the most expensive bank ever. I am a client for 30 years but after this. No longer.