Wrong Item and Poor Returns Process

I ordered a pair of Ray-Ban Caravan Aviator sunglasses from OneDayOnly on the 4th of November 2019. I received the package on the 12th of November 2019 only to find that the package states the correct item and model of sunglasses but the actual sunglasses were a different model, viz. Ray-Ban Marshal. After several back and forth emails with their customer services, I realised that they and the supplier didn't understand the difference and decided it would be best if I requested they collect the item and refund me.

I since receive an apologetic email but the agent can't look through the email trail for the collection address I provided 2 emails ago on the same thread.

With the ability to buy from international stores like Amazon and receive an amazing service from across the globe, companies like OneDayOnly could benefit from learning how.