Waiting for a parcel for 8 days now!!!!!

I made an online purchase on the 28th of November but I still haven’t received the parcel to date when I called the call centre on Friday after tracking the order and noticing that the status has not changed for the last 3 days for the order I was told rudely that I must just wait and it will take 7 days for me to get my order because of “Black Friday”there has been delays in orders ,but my question was why wasn’t I made aware of that before I made the order anyways 8 days later I still don’t have my parcel and I try calling the call centre and I had to hold for 30 minutes with no answer and when I call the customer service call centre and making them aware of this I’m still transferred to the online shopping contact centre to hold 🙄 such customer service is pathetic really .I don’t want the parcel anymore can I have my money credited back into my account!!!!!!!