Any suggestions from the plumber to avoid this?
Well, once this one is fixed, it shouldn't happen again. All of my other pipes are insulated and I leave the kitchen faucet and my bathtub trickling when the temperatures drop low enough to freeze the water. Hopefully, this is the last time this year that I need the plumber. When they're done with today's job, I will probably owe them over $500 for all the work they've done the last couple of months.