I haven't seen anything about this on here or elsewhere really so thought I'd ask if anyone else has had a similar experience.
I tried to organise our claim about 2 months ago when I got a letter saying we needed to sort it out before the CSA shuts down.
I rang - and had to go through an unexpected 45 minute call during which I was asked some very personal questions, such as why our relationship ended (our child is 12), were we living together, did I think he had accepted financial responsibility for our child, (how am I to know that - we barely speak) and how often we communicate, also whether we are friendly, unfriendly, neither, or totally unfriendly. 
I had got to the end of this and was put through having been given a reference number, to pay for the service and make it all official. The line was appalling and I could not hear the guy so I ended the call and then it was the holidays and I decided to call back after.
I called yesterday armed with my reference number. Apparently it meant nothing, no information had been saved and so we had to do it all again.
Got to the end of the intrusive questions, and then I was told they needed to set up security. Fine, I thought.
Password? Easy.
significant name? Oh you can have the same word if you like. Ok.
Significant date. ? Ok.
Seven digit number.
suggested 1234567 - I took this option.
Significant teacher? by this time it is turning into a joke. I can't think of one but somehow manage (decide to write this all down as I'll never remember it)
Significant POP GROUP. Seriously?
Significant place; (I don't really have one tbh)
Significant occasion
and my first school.
8 security questions and apparently, I think this is correct, if you fail to get them right when you call, you have to start the entire process again.
I have no words.