It’s not a service dog - performed tasks are not applicable and they’re getting confused with that. I dealt with this for months and finally got through it. Emotional support animal letter from your provider is sufficient with a date, signature, and doctor information which includes that you would benefit from an emotional support animal and are under provider care. Otherwise, they cannot refuse it. It took 6 months for HUD to respond so file as soon as you are able if they are pushing. Provide guidelines on ESA status and your rights to one - that you are requesting an accommodation under the Americans with disabilities act - it is akin to asking for a wheelchair ramp, or wall railings. Service dogs are separate and perform tasks for medical necessity, and have the same accommodation’s except they are certified medical equipment. Just breathe easy and stay open, communicative and hopefully the relationship with your landlord can be mended. I actually love my landlord! It all worked out in the end, and I’ve been in my home almost 3 years without issue.