Not happy with the service received from the call centre agent

I placed an order on the 23rd of February (order no ********** 28) and the delivery was going to be between the 28th of February and 2nd of March. I called on the 28th regarding the delivery as I needed the order to be delivered during a specific time. I was told the order was going to be delivered on the 1st of March and I asked if can be delivered by 2pm and they Sayed if it's not delivered by 2pm they will deliver 1st thing in the morning on the 2nd of March. Today around 9am I called and that the order be delivered before 2pm as I won't be home after that, the call centre agent told me that he was going to let the courier company know and get back to me but she didn't get back to me as promised. I called again at 1:45pm to cancel the order as the order wouldn't be delivered by 2pm and I am going away for 3 weeks. The call centre agent after telling her that I want to cancel the order put me on hold and she eventually cut the call. I am disappointed at Zando for the way they handled this.