Unacceptable service.

I want to express my extreme annoyance with the customer service department. I moved to Kenya on contract work and noticed that my debit order had not come off my account. I cannot use my SA number so emailed them asking why my debit order had not gone off..this was two months ago! Still nonresponse..Then out of the blue I received my statement telling I was in arrears and the interest charged was half of my debit order. Subsequently sent them another email and still nonresponse. So now I have to pay arrears and interest thanks to poor communication or rather complete lack of communication.