Welcome to the forum
It is not unusual for publishers to not reply at all to unsolicited contact
You really need to develop contacts, network and build a bit of a buzz (even as a writer) if you want to pitch songs yourself - i.e. Move to London/LA/Nashville and network, network, network
You can pitch cold but the songs would have to be AMAZING - is sound EXACTLY like a hit on that could be played on the radio - in terms or writing, production, performance etc.
When pitching songs to publishers you are competing with the very best in the world that would have invested in studios, session performers etc.
I don't know the quality of your husbands recording/production are but the days of submitting a rough demo and someone "hearing the potential" are long gone - the music industry is now mainly run by "money men" and not artistic musicians
Songs now tend to be pitched (and often written) directly to specific opportunities - if an act is looking for a song a publisher wants a song that would perfect for that act - including the production
I would strongly recommend putting one of the songs up here for review and we have many members that can advise if the songs have any commercial potential - I would hate to see you waste time, money, opportunities if the songs are just not commercial enough to stand a chance if you do manage to get in front of someone
I don't mean to sound presumptive but before you do anything I would test to see how good the songs actually are as they would need to be "guaranteed hit" material to be considered by the publishers/artists you appear to be looking at
Writing for TV and film can be a little more forgiving but the same rules about networking apply to get a foot in the door - or you can use paid pitching services - but the songs really have to be top notch in every respect (writing, recording, production etc.)