A company I used to work for had, some years back, made its way onto MATCH (merchant blacklist) for one of the four major credit card companies. Why? It accepted a legitimate (!) payment from a customer who was at the time under 'investigation' by the credit card company for fraud. (Obviously, this was not known to my company at the time that they accepted the payment).
Apparently, we even showed the credit card company that we had provided the appropriate services in exchange for the payment, so there could be no allegation of us helping them 'embezzle' the money. No luck - we were placed on the blacklist for seven years (give or take).
The punchline: that same credit card company had no problems issuing us a credit card in the company's name - not just once, but three times since we were placed on the blacklist.