Please p this along for future mistreatment preventions?

I interviewed for a Process Technician position with General Mills. After the interviews and a tour, I was offered the position via verbally by HR istant, and also via a letter of offer. The letter stated that once I ped a background check, physical, and drug test, I would be hired for the position. I took all the required tests, and was told by Sentia medical professionals that I did indeed p my physical. I am on two types of narcotic pain medication, which I disclosed to both Sentia and also the General Mills doctor, once she called me with my drug screen results. She requested the prescription label copies to be faxed to her, which I did. Upon doing that, I waited longer, and then she called me and requested me to get a letter of approval from the doctor that was treating me to perform all the duties of the position. She also asked me what was I on the medication for, and I told her. I went and had my doctor give the approval letter for me to work the job. Then after some time, the General Mills doctor requested me to have my medical records sent to her. I agreed to do that, although i was concerned as to why she needed to dig deeper into my personal records. After waiting even longer, she then called me and requested I give permission to speak with my doctor. I did so, and then after a few days, The General Mills doctor called me back and said that she was putting some restrictions on me. She stated that she had talked with my pain management doctor, and felt necessary to do so. The General Mills doctor has never met me nor has never treated me for anything, and doesn't even know me personally. At first I thought that my doctor requested the restrictions. Just recently I learned that not only did my personal doctor Not restrict my work, but she also suggested that No restrictions be put on me, that I could do all the work required for the position. Following the General Mills doctor labeling me with false restrictions, I met with HR at General Mills to ensure proper accommodations that would meet the restrictions that were wrongfully placed on me. Following that, and within hours, The General Mills HR called me and said they were not going to meet the restrictions, and therefore they were resending the job offer they had given me. Throughout this whole process, it was very extensive in time, which took about a month and a half to complete. I might add that while waiting for them to do all they needed to do, I had several permanent job offers that I had to p up, because I was misled all throughout this whole process by General Mills Personnel and their doctor, which ured me that all was going to be fine, and that I would in fact get the position finally once the paperwork was out of the way and also once my doctor gave the approval. My doctor approved several times for me to perform al the duties required for the Process Technician position that I was offered. I missed out on several very good opportunities due to being misled, mistreated, false restrictions being placed on me, and discriminated against due to my having to take medications.