you can't really get around that, without verifying those accs with phone numbers, they have very limited usage or no usage at all
there are threads here about free ways to obtain phone numbers, most of those won't work for sure by now or not for everything, but i guess you can still find a golden nugget
other method would be if you can get a hold of sim cards in bulk for cheap
or just spare yourself the headache and do what the above poster said, purchase PVAs or the phone verify service itself, if you already have accs which need to be verified