I am REALLY not married!?

A longtime ago I lived alone having a single life in a small apartment. One day I received a letter with a bank statement for a Mr Olsson. I phoned the bank and I said  - There must be a mistake as Mr Olsson is not living here. The bank clerk responded: No Mr Olsson lives at your address and it is your husband. - No This is not correct I am not married and I can assure you that Mr Olsson does not live here. The clerk did not budge/give in so I hung up and that was that.

I luckily had a friend who worked at the IT department at this bank and she knew that I indeed was not married and did not live together with Mr Olsson. She seeked in the old bank records in the basement and found out that Mr Olsson had lived at the same address 20 years ago and she changed the records so I would not receive any more letters to my "husband".