Lack of Service by Pandora Online Store

On 28 Feb 2024 I purchased a bracelet from Pandora Online.I emailed them immediately after I made payment and requested that order be cancelled because I saw a different bracelet on the website which I then purchased.On 01 March 2024 both bracelets were delivered to me.I sent them an email again requesting that they arrange with courier to collect the unwanted/cancelled bracelet in order for me to get a refund.Today is 5 March 2024 and still no response from Pandora Online store.Ive gone to a physical store but was told that I have to deal with the Online Store.I need assistance with return and refund of purchase.