Now they have given 2nd deadline. Yesterday I received below response . The first deadline was on March 18th.
Thank you for contacting Immigration, Refugees and Citizenship Canada (IRCC).
We have forwarded the information you provided to the responsible office for their consideration.
If further information is needed during the processing of your application, the responsible office may contact you.
Moreover, we have verified the information you provided and can confirm that the agent who responded to you on February 18, 2019, took the appropriate actions to follow up on your request.
If you do not receive more information or a decision by March 21, 2019, we invite you to contact us again by using the IRCC Web form available on our website.
Thank you for contacting Immigration, Refugees and Citizenship Canada (IRCC).
We have forwarded the information you provided to the responsible office for their consideration.
If further information is needed during the processing of your application, the responsible office may contact you.
Moreover, we have verified the information you provided and can confirm that the agent who responded to you on February 18, 2019, took the appropriate actions to follow up on your request.
If you do not receive more information or a decision by March 21, 2019, we invite you to contact us again by using the IRCC Web form available on our website.