I submitted my (fairly simple) tax return on February 25th and now, as of April 7th, it is still being processed. CRA can provide me with no answers.
Did you get a NETFILE confirmation number? If you did not, then your return was not successful sent to the Canada Revenue Agency (CRA).
This TurboTax FAQ shows how to find out if your return was filed using NETFILE and received by the CRA: How do I know if my return was filed using NETFILE and received by the CRA?
Yes, I received a Netfile confirmation number and have contacted Revenue Canada on several separate occasions. They have been unable to indicate why it has taken so long to complete my return.