Terrible online systems

Honestly the worst form of a process I've gone through with FNB. They have been bad before but this has to top it off, with the black Friday deals, their server lagged & that was made my issue. I sat on the app clicking away at my accept button after having selected to agree to the T's & C's, the server would not respond until the point where it eventually kicked me out & just said that there was suddenly an error. I could understand that being the case before I had the product signed off & agreed too but as a customer I would expect that the server should pick up that my application was accepted on their end & all that needed to happen was for their system to respond & for my product to be sent to me. Instead I am left deeply disappointed & in the end again very unhappy with fnb as a whole.