Reminds me of a time when I started receiving mysterious extra line items on my paycheck. Long story short, in addition to my salary the system was sending me short term disability payments meant for another employee (who obviously didn’t get them). Resolving that via “customer service” (HR/payroll) didn’t work - unresponsive. Eventually after about five attempts and five incorrect paychecks I just directly emailed the global head of HR (I guess now called Chief People Officer) of the 50k employee company (with permission from my boss). That worked, but payroll could never completely work out how to unwind this as part of the money went into a stock purchase plan and my 401k. Not sure if the other guy/gal was ever made whole…