Worst online shopping experience ever.

Worst experience ever. I placed and paid for my parcel on 7 December 2019. On 13 December 2019 I received a email stating that my parcel has been shipped. I expected delivery between 13-15 December 2019. December 17 I was notified via email and sms that my parcel is out for delivery but it is 4 days later and I have not received my parcel. I've sent them several emails and tried to call their customer service line but you are put on hold for ever, you never get through to speak to anyone.