Ouch.
Short story, [making it short].
I had a small claims court case where I got a favorable settlement based on the company I sued own call records.
They initially did not give it to me, but were forced to after trying to make a point thru it to their benefit, but it ultimately proved my point.
Any normal company has the records for a considerable amount of time, the question is, will they work to find it.
Its like @Dan showing time stamps on his posts to prove a point to TA's.