If this really is a council house (rather than one rented to you by a Housing Association or other social landlord), & if you have some evidence of the Council's errors on your HB claims, then contact your local ward Councillor & ask them to intervene with the Council to get the eviction stopped or delayed.
I do not think barricading yourself in is likely to help. I believe that bailiffs executing an eviction warrant are entitled to break in, & I doubt very much whether they would accept that you are squatting. Squatters are people who move into empty or unoccupied property - you are currently living there under your tenancy.