Very frustrated, no e-mail communications, faulty app, horrible customer service

1. I gave notice to withdraw money from one of my accounts - it showed that the money would be available on 20 Feb, when I checked there were no pending withdrawals and it said the money was not available and I had to give notice to withdraw.

2. There is NO WAY to contact them at the moment if you can't phone them. If I e-mail them, I get an e-mail back that says that they are not answering e-mails at the moment and that I have to call them. I can rarely afford to stay on the line for a long time inside of business hours.

3. I uploaded proof of my retirement savings again and again and again, but I get no confirmation whether they received it or not.

I am so frustrated and I wish I never joined Discovery Bank, it is impossible to get answers from them if you cannot phone them.