How come revenue canada has not received my completed income tax .ive tried several times to send it to them with no sucess

If you were not successful in NetFiling your return, did you get a message advising why it wasn't being accepted? You may need to print and mail in your return. When your return goes through successfully- you will receive a Netfile confirmation number. 

Here is how to NetFile your return when using the Online version and when using Desktop/download.