Extremely bad service

We made a online order with netflorist on monday the 7th of May 2018. The delivery date was for the Friday the 11th of May 2018. On Friday the 11th at 14:15 we received an email from this company saying that they dont have stock. How can you tell someone on the date that there is no stock? The email just read that there was no stock. No apologies or any other form of contact to try and sort it out was given. Eventually I phoned them. After spending 45min on the phone to different people who eventually tells us that they will do a complementary follower delivery to the physical adress on Saturday the 12th. Saturday has come and gone with no deliveries been made. My poor mother have been waiting since the morning for her mother's day gift with no luck. This is truly a company without any customer service,support,care. On top of this the order was paid in full. Just really really bad service and empty promises.