Pathetic service management

After waiting 5 min for cashier to finish taking a phone order to place order for 2 soft serve cones, waited another 5 minutes for the order, she couldn't leave to get my order because of the telephone orders coming through. Only after calling for the manager was I able to get my order. How do you have 1 person to attend to both walk in customers as well as phone orders at peak time. How much longer soul u have had to wait if I didn't call for the manager who eventually gave me my order.....worst service ever. I won't be going back there! O fault of the cashier, I blame management.