NO response on hello peter complaint

I lodged a complaint on Hello Peter against Nedbank charging me incorrect debit order fees. I then received a response from one Robin Van Niekerk (person who deals with hello peter complaints within nedbank). He first responded via e-mail to acknowledge receipt of the complaint then placed a call to request supporting documents. At first I was a bit irate as I was of the opinion that all this info they are supposed to have. I then later agreed to send my bank statement to him. I sent him a follow up e-mail to which he responded that the he had escalated this to the personal loans dept. I still have not received any response from him this is after I have for the whole of this week without fail sent him e-mail to ask what the progress is. He simply does not respond there is also no out of office reply that he might not be in. I am just being BLATANTLY ignored by NEDBANK.