I have a more unbelievable story.

Several years ago I bought a PC from directly from IBM from their web site using my credit card. It was for business and I submitted an expense report to get reimbursed from my company. The bookkeeper accidentally paid IBM (a 2nd time) instead of me. It took a while, but I get the reimbursement from IBM and now it was all settled. Two years later, the same amount appears on my credit card from IBM. I had not bought anything from them since the original purchase. No explanation, just a charge for around $2,000 on my credit card. I could not contact anyone in IBM to get an explanation and just disputed the charge with my credit card company. The charge eventually went away. But two years is rolling up again and I wonder ...