What happened to Avon and their couriers???

I placed an order the 16th of December already, but still waiting for the order to be delivered.

I emailed Avon to find out what happened to my order, only to receive that the order was returned to them and they'll credit my account.

I asked them not to credit my account, because my clients are waiting for their products.

They recaptured the order, only to send it to the previous old address, as I changed the delivery address to my new address.

Now they are throwing their hands in the air and saying that I didn't change the address.

I'm done with Avon, seems like each time my address change, their couriers get lost.