Can't deliver anymore

For ages we've ordered pizza from dominoes N1 city value centre and it has been delivered. Last week I call to order pizza and I'm told they don't deliver to our area. I told the lady that's ridiculous.... you've delivered here many times how can you suddenly not deliver here anymore. I was told their system has changed so they no longer deliver to our area. REALLY!!!!???? How ridiculous. I'm so annoyed