I would imagine IT work is usually done by the same company and...

I would imagine IT work is usually done by the same company and is charged to an account, not a credit card. For me this is most unusual. Charging a credit card for the purposes of a private investigator is also unusual. For you to try and paint it any other way is just silly and an insult the intelligence of people reading these boards.

I would note the use of a private investigator is not unusual, I have come across this previously, due to suspected criminal activity within an organisation, certainly not the case here, and certainly wasn't paid with a credit card.