It's Lane Bryant Credit Card. They begin calling if your payment is late and will desist calls when your account is deemed current. Until such time you will receive the calls multiple times daily. It happened to me for a missed payment of $35. The calls may also originate from a other area codes as outsourcing is obviously their method of collection.
It isn't just Layne Bryant, it's Dress Barn as well, World National Financial Bank is the collection agency of choice for a lot of different oompanies.