10 YEAR OLD GST RETURN

Hi. I received a call from the government of canada. They were enquiring about GST RETURN of a company i had a long time ago that has been closed for 8 years. They ask for me to do the return for the year 2009 for june and sept. I said its been a while and company closed down. I also promised to do return. After researching, i found out that GST Taxes have a statue of limitation of 6 years. The company lost money and didn't do much business. So should i file the return or should i ignore it? i feel that they are asking me to do something that is over the statue of limitations.