3 months of bad service from avon

I have placed an order on the 7th of February then the order was delivered at the wrong address by Paxi, I have been calling and sending emails to Avon but no one is helping, every time they tell me they have escalated the issue then they keep quite and wait for me to call again and tell me the same story. How long does it it take to get a parcel returned??? It's close to 3 months trying to get this issue sorted. It seems like you dont care about your representatives