Disgusting International Service

My sister is based in the UK. She has spend weeks trying to get the bank to assist with her account in South Africa. The problem came in when Nedbank changed their format on internet banking, which means my sister can no longer get access to her account. She has a list of people she has contacted at Nedbank, and no one comes back to her. I too have raised complaints on her behalf, and whilst a case manager was assigned last week, where he introduced himself. Nothing else was done about it. This has been going on since June this year, and still no further. Please Nedbank, this is just ********** !!!!!