Yes, there is way if you haven't claim the ITC then don't pay IGST claim refund of ITC by filing rfd-01, you can export the goods by furnishing letter of undertaking (lut)
You can claim refund of IGST or refund of ITC if you want refund of IGST then claim ITC and pay the IGST FIRST THEN CLAIM REFUND OF IGST BY FILING SHIPPING BII if you want refund of ITC then don't claim itc BY FILING RFD01