Terrible Customer Service

I have ordered from One Deal a Day on two occasions. The first time they ran out of stock and I had to get a replacement item. The second time I placed and paid for an order on 20/01/2020. I was meant to receive the order within 10 working days. On the 10th day, I hadn't even received the tracking number for the package. I emailed One Deal a Day since they don't give out a customer service number. I received no reply. I tried contacting them through the "contact us" on their website. No reply. Please don't believe that you will get your parcel in 10 days. One Deal a Day has no sense of customer service. I will never order from them again.