Pavilion Construction interview questions

Pavilion Construction has discriminatory hiring practices. I applied for a position with them and after a highly successful round of telephone interviews I was asked to have a medical evaluation including a drug analysis. I complied with their request even though I was not supplied with any information on company policies. After my test was completed, I did not hear back from Pavilion for over a week. I contacted them to follow up and was informed that they would not be proceeding with me because I did not pass the drug test. I said that was absurd because I only take prescription medicine which I provided the documentation for. I was then told by Pavilion that they have a very strict drug policy and even prescription medications are prohibited. Really?? Prescription medications are prohibited and you wait until after I take the test to inform me of this highly discriminatory practice? I was absolutely appalled and outraged. I even asked if they could provide a copy of this policy and they would not respond. Avoid this uncompassionate company at all costs - if this is how they treat employees or prospective employees then I can only wonder how their lack of business ethics affect their clients.