I have just seen this thread, there is some great advice in here.
I am going thru very similar situations, nearly lost our house numerous times, private numbers calling every day, and like you I did the worst thing and ignored it most of the time. I dread making the calls and put it off which just works out bad and makes things worse.
Your not alone, even though I know it's hard not to feel like you are, I feel like I am all the time. Your dh sounds involved which is good, mine has severe health problems at the moment and money is the least of his worries so it feels like it all falls on me.
Feel free to contact me if you need to just chat with someone in a similar situation ( although it seems you have a lot of support on here already