Poor service delivery and communication

I ordered a Nike Roger Federer cap and according to the website, it takes 4-10 working days to receive your order. I called them on the 2nd of Jan 2018 to find out when it would arrive and I was told it would arrive by the 4th of January. Since the 4th I have called daily to find out where in the pipeline my order is. On the 8th I called again and they said I would receive an email to let me know the status of my order. I am yet to receive any emails. Yesterday (10 Jan) I tweeted Nike and they responded saying my package was still in transit. This means that there is no clear communication and I’m not getting the same story from the lady in the call center and the response on Twitter. I expected better service from a company of Nike’s stature and magnitude.