I just wanted a chocolate milkshake and my mom got one but when i drank it tasted entirely exactly like coffee

I'm so sad I've just wanted a chocolare milkshake for days and I hate coffee and I now have the taste in my mouth. I thought I was gonna get a chocolate milkshake. Apparently it was 8 dollars so I just wasted my moms money because fhe wouldn't otherwise be buying a coffee at 9 pm