What's up With VTS?

I'm pretty sure he doesn't have call waiting. I've made calls where the phone rings & rings,  and when I call back later he'll answer.
I know, not a great service for the customers, but he's worth the wait.

Yesterday when I tried calling multiple timee, hours apart, it wouldn't even ring. The dial was followed by a brief silence and then a disconnect with a "line busy" notice. I get that he's old-school but would a voicemail be asking too much? Maybe next time I should send a letter by horseback.

but would a voicemail be asking too much? 

do you know how many voicemails he would have ?    
You complain that he doesn’t answer the phone now , well having to listen to a a lot of voicemails would only make things worse for him and customers.