Banking services will be severely hit after the All India Bank Officers Confederation (AIBOC), a bank officers’ union has separately threatened another bank strike on December 21. According to a PTI report, bank unions have already called for a nationwide strike on December 26 to protest against the proposed mega merger of three PSU banks -- Bank of Baroda, Dena Bank and Vijaya Bank. December 21 being a Friday, bank services will be severely hit till December 26 -- except for December 24 which is Monday. Banks will remain closed on December 25, being Christmas and December 22, being the second Saturday. The United Forum of Bank Unions (UFBU), had rejected Indian Banks' Association's 8% wage hike offer.