PicknPay online delivery

Once again PicknPay and their useless delivery system. Order was scheduled for delivery between 3pm and 4pm. It's now 5.30 pm and still no order. Called the call centre and Reagan said he can't get hold of the dispatchaikovsky centre but will escalate it. To whom I might ask?? Asked for the store managers number as this is not the first time we've experienced problems. Number was refused. My order was placed for delivery at a reasonable time. This is simply unacceptable.