IndiGo — Change to full name in ticket

My full name is missing from ticket. It should be 'safiuzzama khan' but its only 'safiuz khan' I done return ticket booking from Dubai to Delhi. Ticket no-' J6YVFZ ' I raised the concern with customercare and was assured it will be resolved within next 24hrs but its more than a week and I my complain not being resolved.Also I email to customer.[protected]@goindigo.in but havnt got any reply till date. This shows how inefficient is Indigo on handling their customers and there complains.