An appeal can be filed with the Ombudsman under the regulations – (a) by a complainant whose grievance has not been resolved within thirty days from the escalation of the grievance to National Pension System Trust (b) by a complainant, where a complaint has been made directly against the National Pension System Trust and no other intermediary and the same remains unresolved within the specified period of thirty days(a) by a complainant whose grievance has not been resolved within thirty days from the escalation of the grievance to National Pension System Trust