Proof of residency for EU citizen

[hraban]

Hello,

I've seen NCS two days ago, and I was told that my university enrolment confirmation letter and award confirmation, with all stamps and signatures, is not a proof I was physically present in the country. As this is a requirement, I need to find another way to prove that I have been present in the UK from November 2012 to March 2013. I tried to ask them what is that exactly that they need, does the university letter have a name, or anything, and they just said "we don't know". It only has to state that I was physically attending the university. For some reason a letter from a GP is a stronger proof that I was here. But I do not have a single clue what GP I was registered to 5 years ago!
So I ended up going to my former university and asked them if they have any sort of a letter that could have words "physically present" in it - and unsurprisingly they had nothing to offer other than enrolment confirmation and award confirmation, rejected by NCS before.
I could possibly figure somehow out where and how I was registered to GP (if I was registered at all) and get the paper, but the university letter situation bugs me so much - what is an acceptable proof if not those official letters? I asked a girl in the undergrad office whether she had anyone coming with a similar question, and she said no.
Is is possible that the NCS advisor was just not competent?
I ended up getting another enrolment confirmation from the uni, where it additionally says (quote) "<name> attended the university from 2008 - 2013, in person as a full-time student for the whole duration". Does this make any difference?

Thanks.

P.S. Oh yes, bank statements and council tax letters are not a proof either as I was told.

[eumumto2]

Why Council tax statements wasn't good enough?
We were ok with P60's and Council tax statements.