WE ARE REVIEWING YOUR BENET CLAIM

Hi, i received a letter from the dwp saying.
we are reviewing your your benefit claim,
Come to your meeting to keep us up to date
It is from the Local services compliance
Wythenshaw jobcentre ???

I am on esa support group not jobseekers, why have i had a l etter like this.
It says, weve arranged a time to meet you to talk about any changes which could affect your
benefit, we will need you to provide us with the information on page 2 of this letter so we can make sure you are getting everything that you should.
They have made an appointment for the 27th oct. I dont understand why? I havent left my house in yrs as i suffer with severe agaraphobia. Can i refuse to go to the appointment as it is saying, if i dont i will lose my benefit. They was proof of Id.document if i have them. most recent bank statement
isa statments
statement form penision provider, i do have a pension which is private, this was from my devorse settlement not from, a company where i used to work??

I am worrying myself sick, why am i being aske to do this.
they know im in the support group, suffer with mental illness and physical disabilties.

Please help put my mind at ease, i havent done anything wrong
kind regards
shaz