pathetic service,keep getting told to go to the branch and they still cant assist me

I had an issue with my ATM card pin code so I went to the branch at kolonnade to get assistance in changing/fixing the issue. I could login just fine on the banking app but could not swipe with the card as it kept saying my pin is incorrect. after more than an hour the consultant could not assist me and said it was the cellphone network on my cellphone (vodacom) causing the app not to allow us to change the pin. super strange as I do get notification SMS for deposits for Capitec and old mutual. capitec banking works 100% on same phone so how could it be a network issue. she called the old mutual call center numerous times and still no assistance. she then gave me the number which i called this afternoon to get assistance but was just told I have to go back to the branch to get assistance. I am really unhappy about this as I specifically went there this morning and was thereafter told by the consultant that the call center would also be able to assist me. its stuff like this that will make me close the account.