PIP Mess!! :(

I was requested to apply for PIP after being on DLA indefinitely. I sent off the forms and had a home visit from someone from ATOS. This lady lied on her assessment of me and I was refused PIP as a result. She also failed to add certain things that I had told her about my illnesses. I was on the higher rate of mobility and the lower rate for care under the DLA scheme. Now I am awarded nothing.
On being notified of this, I appealed asking for a Mandatory Reconsideration. I was sent the relevant paperwork and called the PIP people as I have a hand injury and am unable to put the appeal in writing.
I was given a date that they would call me to discuss the reconsideration and I spoke with a man on June 16th. I explained everything in detail to him and spent about 45 minutes on the phone with him discussing my situation in detail. He told me that this would then go to the decision maker and to give it a few weeks before I can expect to hear anything.
Fast forward to today, 5 weeks on and I'd not heard anything. So I called PIP and was told that this man (Roger) who I spoke to, had closed the case on the 16th June, the very day I spoke to him!! I'd had no letter informing me of this and there is nothing on their records to even show that a letter was even sent to me!!
As a result, I'm now unable to take this further to a tribunal because I'd need the letter stating I was refused the PIP reconsideration. The lady I spoke to today said she would put in another Mandatory Reconsideration again and I'd again have to wait for the decision maker to decide whether I'll be awarded anything!!
This whole thing has stressed me out and has me worried, scared and totally confused as to what my right are and what I can do next?
Please, if anyone has any advice I'd appreciate it.