False promises and missed delivery dealine

Hello Good People I recently purchased an item online from HiFi Corp. The item was a birthday present. They have a committment to deliver 2 to 5 working days from order placement. I was hoping that the item can arrive in time for the recipient's birthday. I emailed HiFi continuously and pleaded with them to try their best to deliver within 3 days. They were unsympathetic and their response was always, like a broken record, that they will deliver by the 5th day, within the stipulated timeline. Other responses indicated that I should flag them if not delivered by the end of day 3. I did that but their response was the broken record response again. On the 4th day I insisted that they lodge a final complaint, which they did reluctantly. They said they will respond to the complaint within 24 hours, but did not. My point was that the item was handed over to the courier on day 2. Why does the courier have to hold onto the item for days? At the end of working day 5 they still did not deliver, despite receiving a message indicating that the item will be delivered by the end of working day 5. The item still has not been delivered at working 6. I emailed them again, but they not responding. I will advise all good people not to support this company. They make promises and don't follow through. They promise one thing in the email but do something else when the promise is challenged. I am so frustrated with this company and want to now take the issue up with the onbudsman. PLEASE DONT SUPPORT THEM.