ESA Change in Circumstances - Carer's Premium

Could someone kindly clarify what my ESA payment is now to be made up of? I was on ESA IR for a number of years,, living alone and in the Support Group. My estranged husband moved in with me in September 2018 and he was/is in ESA Support Group but was sadly diagnosed terminally ill that month. Due to his advanced cancer diagnosis of 6 months he was fast-tracked onto PIP which he now receives. I contacted DWP in September with change in circumstances and today received a letter which in itself is confusing and I telephone DWP only for the adviser to contradict herself 3 times during the conversation so I do not know if I am to receive any payments, just NIC or if I will be paid and is it CB or IR ESA?

I was receiving £127.15 - composed of £73.10 basic, £16.40 Disability Guarantee and £37.65 as in Support Group. Letter today states I was on £127.15 at 10/4/18 and from the 11/9/18 (date my husband moved in) my ESA will be £110.75. It goes on to say I am NOT getting any more income related ESA. Page 4 of the letter states current rates which includes all 3 elements which total £127.15 and that this amount applies from 10/4/18 to 10/9/18. No income will be taken off my ESA. My income related amount is £127.15 less total income of £0.00! I have no ideal if I will be receiving any income at all other than NIC. If I will receive £127.15 or £110.75. The DWP adviser said £127.15 then changed her mind to £110,75. Told me it was CB based but I still qualified for free prescriptions and dental work?? Is this because my husband is receiving ESA - he was migrated from IB to ESA years ago? I would really appreciate some clarification on this - the DWP letters seem a nonsense
TIA

Thank you Gordon. Would I be eligible for a carer's premium or carer's allowance payment of some sort as I am caring for him in the home 24 hours a day? Would this change my ESA from CB to IR?

]Can I ask what you mean by low income Gordon - I have already declared to DWP we have no assets, no savings, I only receive ESA - as I have said my husband receives PIP at both higher rates, ESA and IIDB. If I was to try to apply for Carers Premium would it be in our interest or would it simply be deducted from my ESA or my husband's ESA? Apologies if I have repeated myself from another post!