Hi, my name is su101! answers about the pip process needed. Getting conflicting info.

I really need some help with some answers about the pip process i’ve been driving myself mad trying to work it out myself. 
I applied for PIP in mid january for mixed depression and anxiety disorder, DWP sent me a text to tell me to fill out the form and i did, shortly after (2 weeks maybe) i had a letter through the post saying CAPITA had scheduled an appointment for me in mid february (pretty much a month after i had applied) this letter was sent to me at the start of february so i could prepare myself. The day before my assessment i had a message from DWP saying a healthcare assessment was looking over my claim and would contact me if they thought i needed an assessment- i was confused by this because i’d already had an assessment scheduled. Anyway so the next day i had the assessment and i thought it went okay obviously i was on the edge of a panic attack but i got it done. The day after the assessment i had a message saying DWP had recieved my assessment report and were looking over it which was pretty fast all things considered. This was mid feb. I’d heard nothing more until just two days ago when DWP called me, a woman was on the phone and asked if i could answer some security questions and i answered them, she then said she was finishing up my claim that day and the letter would be sent out that day or tomorrow, and that i ‘wouldn’t have to wait much longer now’ all in all she sounded rather optimistic on her end of the line but i thought nothing of it. Minutes after i got off the phone with DWP i had a message from them saying ‘thanks for claiming personal independence payment we will shortly send you a ‘how your disability affects you form’’. Obviously this sent me into a spiral because i started thinking they are going to make me do the whole process again which i did not want to do. So i called PIP yesterday just to ask why that message had been sent to see if there had been a mistake. A guy was on the other line and i asked him about it and he said something along the lines of ‘oh yeah i don’t really know actually that’s a bit confusing yeah i don’t know’ so i was like okay that’s fine i’ll just wait and see but before i could get off the phone he said ‘yeah it looks like your claim has been disallowed the letter is coming to you soon’. I myself am convinced they have mixed me up with someone else with all these random text messages and whatnot. I cannot see how i can have been rejected i compared my form with the points system and i should’ve got minimum 10 for each mobility and living. If anyone has had this happen to them before please let me know. I just don’t understand why the woman wouldn’t have told me on the phone the other day if i had been unsuccessful. anyways i’m waiting for the letter to come through but i’m just so confused as to how i couldn’t have got it. 
If anyone has any advice please let me know as this is causing me too much stress and upset.