Like what the hell

I am beyond angry 😡 right now. So short story I started a job on Tuesday and worked all week. I was not late I did everything expected of me and did the job as well as Impossibly could as I was only just being trained. And had never done this job before. Well I get an email from
The boss saying due to my performance they are letting me go. What performance??? I had four days to learn every system , policy and procedure! I thought I was doing well. Was not once told other wise until the email. And they say they tried to call and text me yet I show
Nothing on my phone at all wth I am just beyond words. I honestly feel that they’ve seen that. I have an illness that doesn’t affect my ability to do my job in anyway and so they let me go. It really pisses me off. I don’t understand how you can fire somebody about their performance when they’ve only been there four days. How can anybody be judged on their performance on a job that they’re still being trained on oh well back to unemployment I go this year has been a fucking shit show. I lost my job of 11 years in March along with 156 other people I really hope something better comes along.