What are my options for a visa extension in Thailand without proof of residence?

I need to get a visa extension but I don’t have proof of my residence. My ex employer provided me with accommodation as part of my contract and am still living in their house until they pay me my severance. I need to get a visa extension and there is no way the owners of the house(my ex

Employer) will fill out any form stating that I live in their house. My 60 day visa expires 7/22 and was hoping

To stay until 8/ 23, when I fly back to America. Do I have any options here? Or do I have to try and make a land crossing (since both my border runs were by air since January).