Delivery one and a half hours late

I placed an order via the KFC call centre on 28/10 at 18:35. I was told that the order would at 45 mins to an hour. At 19:50, I called the call centre again complaining about the food not yet been delivered. I was told that they would call the store to find out what happened and I would get a call back. The food was delivered 10 mins later with the time on the slip showing 18:20. 45 mins after I placed the order. <br> <br> I received no apology for the late delivery.<br> <br> Am I just supposed to accept this type of service when I am been charged for. Unacceptable!!!<br> <br> And by the way I am still waiting for someone to call me back. ?