Hi @Russell1994.

Welcome to the Sonos community and thanks for reaching out to us. I understand that you unintentionally clicked on the upgrade icon on your account. Allow me to help out by recommending on contacting our sales team @+18006802345 option 4 to discuss. They may have the most appropriate answer and recommendation.

Please let us know how it goes and keep us posted here in the community.

Thanks and Happy New Year.

Why should the OP call international? 

@Russell1994: https://www.sonos.com/en-gb/contact

You wont “lose” your amp anyway.

So…. spoke with Sonos support today and they tell me that the “upgrade” is to allow greater choice for customers to upgrade with a discount and does not render you equipment inoperable( which I thought it did?) They also say I can use discount( one time per discount) on any product so would be rude not to add more speakers to the household! Thank you Sonos and community! Russ

It did, for about 6 weeks, but Sonos changed the policy at that point, and no longer does anything to your devices, other than not allowing another discount to be used from that same device.