Client complaint

Nedbank has awfully and unfairly treated my mom who has been their client for more than 15 years who is a pensioner. in their hands and security my mom has lost her hard earned money which is more than R10 000 which she has entrusted them with, ***** was committed into my mom's investment account which was not linked into into her banking app but when she went to the branch she was told she had nothing, devestated as she was she was told to go home I had to go with her and open a case after opening a case we were not updated as to how far the case is I had to call almost everyday to find out whats happening with my mom's case until I wrote this on social media and again I had to wait for almost two months to receive feedback. Now Iam very disappointed with Nedbank as they only paid back not even half of what my mom lost on her investment account and their reason is because the ********* authorised all payment using my Mom's number now my mom did report that she has issues with her number at the Nedbank branch and she changed her number and the teller at the branch told her that she should relax nothing will happen with her investment account and again they mention that the ********* also used my mom's ID number but how when she did not give anyone or anybody her ID number. My mom trusted Nedbank with her Money for years and this is one her last money saved for years and all they did was not payback all her money and after tons of calls and complains they disappoint us and unfairly treats my mom's case she has been victimised by Nedbank why are they not paying every cent my mom had on her investment account only Nedbank had access to her investment account no body else. She reported every little incident to the branch and when ever she wanted to withdraw from her investment account she would visit the branch why can't Nedbank payback my mom's hard earned money she was never negligent and as a pensioner she did not even use any cellphone banking.