I have already filled 2017 tax returns and already received refund.
later on I received letter from my mortgage company that they haven't included Mortgage insurance premium (PMI) in original form 1098. so I have started amendment on Turbox tax site and enter my PMI amount, but nothing is reflecting on refund amount. it is still showing $0.
will site show updated refund amount? if it still no refund then can I cancel my amendment? what should I do?