Make sure that the landlord is actually receiving your housing benefits.
There could be a hiccup in a postcode, address or a reference, which could lead to your landlord not receiving your housing benefits. If you are in arrears, this would mean that your arrears continue to grow, or become higher than you are aware of.
Are you in such a situation? The first thing to do is simply to contact your letting agent in writing. Have the letting agent confirm to you in writing that they are receiving your housing benefits and are forwarding them to your landlord. Your local CAB may be able to guide you if you need help with this.
If the same applies to you but your landlord has meanwhile started eviction proceedings against you, do the same. Contact your letting agent in writing and have the letting agent confirm to you in writing how much housing benefits they have paid to your landlord, and when. It could help clear up errors before it’s too late.