Tax season is never fun. But some tax filers this year face an added complication: Their returns are being rejected because they failed to provide information about Affordable Care Act coverage they didn’t even know they had. While the concern about unscrupulous brokers enrolling unsuspecting people in ACA coverage has simmered for years, complaints have risen in recent months as consumers discover their health insurance coverage isn’t what they thought it was. Now such unauthorized enrollments are also causing tax headaches. Returns are getting rejected by the IRS and some people will have to…