Can I get her sacked for forging my signature on an application form?

Iv had a job advisor for around 1 month. She chose me for this job interview that her company manages to get staff for the job etc

She called me on the Tuesday and told me about the interview for Friday etc 

Then the next day she emailed me:

***Hi***

***Just to let you know I have filled out the application form for you and it will be taken to the employer on Friday this week***

***Best of luck with your interviews tomorrow***

***Kind regards***

Then when I attended the guy walked over to me with that application form and he asked is it my handwriting I said no and he paused then said ‘ok full this new one out’

My signature was written on the back of the one she did. *****. Should I complain?

*** I signed a waiver consent form when I first when to see the ***** but does that authorise this? Surely not?***