If they don't show signs of life this year they will not grow back next year.
If you do get growth from one next year it will probably be the root stock, not the rose you purchased.
That long late freeze hitting when it did, caused lots of cane damage and if you had removed any winter protection (you did supply winter protection in your zone?) it may have damaged the bud union and killed the plants.
I lost lots of leafing out canes to the freeze. I had to prune back severely but my bushes survived and are growing very well now.

grspirit,

If you proceed w/ digging them up, make sure to check closely the bud union beforehand. I had several I thought were dead but had new, delayed growth hidden under the bud union. (but on the union itself) One was a David Austin & the other an 8 year old Iceberg. Both are doing great now although considerably smaller than previous years.

One of my Westerlands died completely to the ground, actually to below the ground but is now about a foot 1/2 tall! So check carefully before SP'ing.

Both of my American Pillar climbers croaked to within an inch of their lives. I cut back almost to the ground but now they are halfway up my arbor once more.

Betty