For refund-related questions, contact the Delaware Division of Revenue.
Statement from Delaware Division of Revenue: You will receive a tax return acknowledgement from the Delaware Division of Revenue when your return has been received and is being processed. If additional information is needed to process your return, the Division of Revenue will contact you. Refund time frames can vary depending on the complexity of your return (usually 4 to 12 weeks). You can check the status of your refund anytime at https://dorweb.revenue.delaware.gov/scripts/refinq/refinq.dll