Doritos Sweet Chilli - I am now allergic to my favourite flavour. Thanks for ruining it for me

Doritos Sweet Chilli was always my favourite flavour.of Doritos and the only flavour that I could eat because it was gluten free. Then without notice you went and added barley to the ingredients of a flavour I loved and trusted and can no longer eat. I despise you guys...you have ruined something dear to my heart. So much for consumer trust. I ate the chips a few times and nearly got sick. After getting an alergic reaction a few times I checked the ingredients which I thought didnt contain gluten but you decided to just go and change that. You've lost my trust as a consumer but also my business. I"ll make sure never to support your business again.