Contact Ebay and ask them to change the tracking to the correct one.
Use the link below to get a callback.
If it is outside of the time allowed for you to return the item, the case may already be closed - you have taken a risk leaving it nearly two weeks to sort this out.
https://www.ebay.co.uk/help/eua?id=5275&mkevt=1&mkpid
"There are two ways to be fooled. One is to believe what isn't true; the other is to refuse to believe what is true.”
Søren Kierkegaard, Danish philosopher (1813 - 1855)