RCM is applicable to Service Exporters. Under the present scheme, you pay the GST on Reverse charge IF APPLICABLE based on where the place of supply is as per section 13 of the IGST Act. Go for refund by filing manual claims.
Note; Service provided and consumed outside India would not be liable even though payment made from India.
Services provided from outside India where the POS is location of supplier ( Illustration- Sec- 13(8) a) Banking or financial services b) Intermediary ( agent) c) Hiring transport upto a period of 1 month.- In all these cases though the service is received in India it would not be liable for RCM due to POS.
Similarly one would require to go thru all the sub sections to sec 13.