"Suffering with a frozen shoulder for over a year"

I have been suffering with a very sore left shoulder and arm for over a year now. I have been to see several doctors within my practice and given painkillers to manage this which I have repeatedly said do not help at all. I was finally referred to a physiotherapist who was fantastic and diagnosed a severe frozen shoulder with limited movement. This appointment was a year after my initial complaint about having shoulder/arm pain.

I had a steroid injection in Jan 2017 followed by a second injection a fortnight later where it was apparent that these had made no difference at all. I was referred after seeing my physiotherapist a week later. Since then the pain has got significantly worse. It's unbearable! My skin pigmentation on my shoulder/arm/hand has become patchy and discoloured. There are times when my arm doesn't feel like it's attached to my body. I finally got through to my doctor surgery this morning and made it through the triage for a doctor to call me. I received a call about an hour later. The doctor did not introduce themselves. They advised me that I had already been seen by several doctors and a physiotherapist so increasing my medication for pain relief would probably be the best thing to do. To be honest by then I wished I hadn't bothered calling! I asked about when I may see the orthopaedic team and was told to call them. I asked why I was still waiting for an MRI which my other doctor has referred me for in May 2016 as they queried possible Degenerate Disc Disease and again I was told they didn't know. Can anyone actually help me? I've had this pain for 15 months and it's really impacting on my life! I feel that I cannot cope anymore.