Asked to return kit after moving house, but I'm still using it

[Tobster]

Hello!

I've just moved house and transferred my broadband connection across to the new property. Everything works great.

I received a letter requesting to return the BT kit to BT within 60 days or I'll be charged. However, I'm still using the router that was sent to my previous property and have not been sent a new one. I can't really return this.

Has anyone else been asked for this before? If I don't return it am I likely to be charged?

Thanks

[licquorice]

Here's an idea, call BT and explain.