[MDyDinanM]

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it would be interesting to post the receipt/service invoice you should have received from the other BMW dealer that fixed your car (unless you can't for privacy reasons)

I personally don't doubt you, but posting it would further grant legitimacy and put more favor in your court (in the eyes of e90post forum members...if that means anything...lol), especially if all it said was "replaced steering column" without any further diagnostic or service detail.

I know service invoices can be quite vague in explaining what went wrong. Sometimes, if I have the time, or really interested, I go talk to the tech themselves.