Abel Equipment - Unable to keep a promise

As everyone knows I sustained a brain injury and have short term memory issues preventing me from working. I don't know what I am or unable to still do so I wanted to attempt to study what I was qualified in before my brain injury. I have a netbook and need another screen or two to make notes on. I then contacted Abel Equipment about the possibility of a used/repaired dual screen. The response I got was if I promoted some book on my social media they would gift me with a pre owned dual screen. I promoted it on my Instagram, my friends Facebook and a second Facebook account. I basically went over and beyond. After over a week someone then had a question about the book and when I contacted Abel Equipment they said that I should remove my post with no reasoning at all. So after promoting on 3 separate accounts (3 times more than what I was asked to do) which had over 5000 views, they retracted their offer without a valid reason. (i personally believe they got lots of clientele in that short period of time that they probably got a huge return on my promotion). They are now ignoring me and not sticking to their promise of a pre-owned dual screen. Any business that can exploit a mentally disabled person with a promise to assist in helping them better their lives is a business nobody should support. I have even gotten offers to vandalise the business from strangers I don't even know. I am hoping this post changes theif minds and they stick to what was promised or I will have to allow those vandalism offers.