Hi, I am desperate for help

my ESA was not paid into my account today and I have no credit on my phone. I am disabled and I cannot go out of the house alone. I have looked for email contact details all over the web, gov.org etc and there is no way to email them. this is the 21st century for goodness' sake. My sicknote was was in on time so there should be no delay but this is not the first time by a long stretch that this has happened to me. so in summary, I have no way to contact ESA at all and the problem is that i cannot email or phone or get to a jobcentre plus office. Any advice would be most appreciated. thanks, Mel