$7k and 3 months later and Guardian is still "working on it" and asking me to "be patient"

I have RSD from carpel tunnel surgery in March of 2010. The surgeon sent me to a pain Dr 3 weeks after surgery not telling me why. He had to send all my info to the pain Dr. before I could get an appt. I met my pain Dr on my bday, April in 2010 with the diagnosis of RSD. It was managed with pain meds and some other meds at first. My hand, 4 years later, is still swollen, numb and is in constant burning pain – but always getting worse. Now my fingers barely move. I was on FMLA for a year before I went out completely. I had the same job for 15 years, so they were always aware of my condition progressing. Now I am on pain Patches and Morphine. I can not even think clearly much less move my hand. It’s pretty horrible. At any rate, my Dr wrote me off work at the end of April, 2014. My employer filled in their section and sent it off to Guardian. STD is 70% for 6 months and LTD is 60% til retirement age. I have sent more than 2 times all of my Dr’s reports – from my monthly pain Dr’s info to my PCP who signed the paperwork. I also now live in London (my husband is British) and even had my current Dr fill out paperwork and signed that I am disabled and evaluating my pain and hand, etc. It has now been over 3 months and I have not received anything besides “they are still working on it” and “I just need this one more piece of info” and “please be patient” and no check yet. I estimate the first check should be about $7k by now (my waiting period is only 7 days). It’s very frustrating. It’s a huge financial strain.