Steak 'n Shake

I ordered a large unsweetened iced tea. They said they could only give me a medium because that's all they left.
When I got home, took a drink, I instantly knew something was very wrong. I could taste bleach along with the tea. It made my throat sore and also upset my stomach.
It is terrible.
The restaurant is on airport road in Jackson, MI.
I tried calling both customer service numbers but all were unavailable.
My phone number is +[protected].
My name is Stephen R. Murphy