FNB new account

So on Wednesday 17 April 24 I went to FNB Lambton to open a new account. The lady that helped me was very professional and she also helped me to set up my online banking app. When I left there everything was working fine. On Thursday 18 April I logged into my account using my laptop so I change my username because I didn't want to use the one they gave me. After about an hour I got an sms that said my online banking profile has been blocked. After I received that message I could no longer access my account from my laptop or phone. I went to branch this morning (19 April ) to go and sort it out. After some time I was told that the ***** department blocked my online banking profile. They did manage to unblock it for me but I still couldn't access my online banking app from my phone because the ***** department decided to also blacklist my devices...I left the FNB branch after spending almost 3 hrs there and was told that someone from the ***** department will contact me...I is now 18:30pm and nobody has contacted me.