FNB HAS CANCELLED ME!!!

After a long disastrous effort to sort out my dysfunctional FNB banking app with phone calls and communication, I sent a complaint to FNB and on hellopeter. Kensane Novela from FNB tried to phone me many times on the 12th, but my phone rejected the calls for some reason. That is a mystery in itself. I was unaware of it. Kensane sent me an e-mail with a phone number, which I tried to call. A recording said that the number did not exist. Another mystery. I phoned the customer service centre who told me they cannot help me, I must wait for them to phone me again. I saved the number Kensane tried to phone me from in my contacts and responded to the e-mail, asking them to phone me again. This was 5 days ago. Do you think you've done enough now FNB????? I tried to log in on my web browser, but received a privacy error. So, FNB, it seems I have been cancelled. I cannot log into my phone app I cannot log into my browser I cannot phone the number you gave me...it does not exist I cannot be transferred by the customer service centre to the correct people to assist me I don't get a response to my email Kensane tried to phone me 5 days ago and has not tried to contact me again

What am I supposed to do now?????????