The finance ministry has summoned Infosys chief Salil Parekh today to explain the continuing glitches in the new income tax e-filing portal, which has been in use since June. Union Finance Minister Nirmala Sitharaman had expressed concern over the issue earlier. Mr Parekh and senior executive Praveen Rao were asked to ensure that the portal is made "more humane and user-friendly", the finance ministry had said.