@itsbrokenagain
What licence/certificate do you hold? I did run into a similar problem with another aviation authority (matters now sorted).
Certificates of English Language Proficiency issued by organizations recognized by ICAO or by one of the contracting state members are accepted by the DGCA according to its CARS.
An "English proficient" endorsement on an FAA airman certificate attests that the airman meets the Level 4 operational standards found in ICAO Annex 1
www.faa.gov/other_visit/aviation_industry/airline_operators/airline_safety/info/all_infos/media/2008/inFO08012.pdf
The ICAO English level 4 endorsement is normally valid for 3 years. Since there is no expiry date stated, if a certificate holder's biennial reviews/sim checks are current, there should be no questions about taking another English test, as an informal English assessment would have been a part of the reviews/checks by the examiner, and well within 3 years.
Ask for a current copy of certificate verification from the FAA via email. It should state that you are still "English proficient". Perhaps you'll get away with it.
It is pretty straight forward if you hold a UK CAA licence, as you can just forward your copy of one of the SRG's to the DGCA.
The UK CAA licences do not show levels of proficiency, or an expiry date, just - "Language Proficiency: English". This endorsement is equivalent to ICAO English level 4. Records of English proficiency assessment at level 6 include SRG 1199, SRG 1189 etc. application forms (see link page 16),
http://www.caa.co.uk/docs/1688/Langu..._examiners.pdf
ask the CAA to email you the relevant application if you don't have a copy of it.