Myflowertree.com — Cancellation

I had placed an order to be delivered on 31st of December (Order ID 1120755). The customer care executive has not been helpful and the website isn't allowing me to cancel the order. I have received two responses from the team saying they attempted the delivery but I have not received any calls. I live in an apartment complex and I checked with the security team in case if anyone had come for the delivery but unfortunately no one from the team has come for delivery. The apartment complex can be searched easily from google maps. I do not want the order as it's of no point now. I want to cancel the order and a refund. I have been promised a call back from the team and till now I haven't gotten any calls as well.