What documents are required for applying for a Thai visa from a landlord's perspective?

I went to Hanoi's Thai embassy on Wednesday to apply for a visa but was told I couldn't apply without my landlord's house registration.

I returned on Thursday with a copy of what my landlord says is the house registration document (it's in Thai but I can see it has my address on it) and the embassy front desk accepted my application.

On Friday, the embassy contacted me to say they couldn't process my visa because the document the landlord provided doesn't show his name.

My landlord says he hasn't put his name on the house registration because he owns many properties (not sure why that's relevant). Instead, he has provided me with some utility bills in his name and suggested I show that to the embassy.

I presume that when I take these documents to the embassy on Monday, they won't accept them, as the embassy staff were adamant that the house registration document shows the landlord's name (they think the landlord just provided the wrong page).

I'm now very confused and any words of wisdom or guidance would be very much appreciated.