<human>: I moved to a new city and found a part time job in sales, but was looking for more consistent hours, so I asked around. One of my friends had started working at a restaurant as a hostess and they desperately needed more hostesses, so I dropped off a resume and started the job the same day. 

Because my friend had set it up for me, and because I've had several years of experience in the service industry, I never really thought to ask how much I'd be paid. Got my first paycheck today and I'm being paid $7.50 an hour and NOT being tipped out, which is insane. My friend talked to another mutual friend of ours and told him that when I dropped my resume off, she was told not to tell me how much she was being paid, which is $13 an hour, despite having no previous restaurant experience. 

I feel betrayed beyond belief. I know this is partially my fault for not inquiring earlier as to my hourly pay, but I can't believe that someone I consider a friend let me get screwed over so hard. Am I wrong to feel this way?

Could you distill the essence of the text into 1-3 sentences?
<bot>: My friend knew I was going to be paid far less than her and let me walk into it. I feel betrayed and used. What should I do?