Sounds to me like you have been very unlucky, getting hit with a late season frost. Is the shrub in a spot that gets warmer than the rest of the yard? Perhaps look for a micro climate in the the yard which doesn't get quite as much sunlight so very early in the season. If placed there, perhaps the budding could be delayed by two or three weeks which would likely remove the threat of a late frost to the tender young foliage.
Eclectic gardening style, drawing from 45 years of interest and experience. Mostly plant in raised beds and containers primarily using intensive gardening techniques.