Accessory Power Junior Software Developer interview questions

The interview process was pretty standard. Email correspondence and a few phone calls for behavioral questions and background... Until the final interview... When I applied for the job, the salary range was stated at $70,000-90,000 a year for a junior level position, which is fair and when I expect... When they finally asked me about my salary expectations, I told them a valid number within the range of 70,000-90,000. I was then informed that the position is not in fact a Junior level position but an "internship" in which the pay is $18/hr or just above minimum wage in southern California. I hung up on the interviewer because it was a total bait and switch, and even so, the average pay rate for a Computer Science internship is between $25-30/hr or even more if it's in the bay area.