Useless BANK FNB

I was logging to the FNB app. I use my fingertip to unlock the App. On the first attempt my App was blocked. I tried to unblock it using my bank card number and pin. Unfortunately it kept refusing my pin until the bank pin blocked. I dialed *120*321#, typed my online banking pin, then select option 4 (bank).. I managed to transfer money. When I do Ewallet it allows me to withdraw only R50-R200. I tried to pay money to someone's account it only allow me to pay R50-R200. I phoned FNB to unblock my profile, find out why my App is blocked and the App reject my pin. The lady from ***** department said she will transfer my call for someone to unblock my pin. The service consultant by the name of Mohau Rashalaha ask for security reason, I gave it to her. Then she said I must go to the bank. I ask whicjlh FNB BANK open on Sunday. She said I must wait until tomorrow. I rep**** that at the ***** department thay said you can unblock my profile. She said there's nothing I can do. My 4 months old baby is starving, he can't wear pumpers,because of FNB system.