United Airlines gave me the wrong advice! HELP!

I was given $175 travel credit due to diverted flight, causing the loss of a vacation day and hotel.

I recently created a new reservation and wasn’t able to locate where to attached the $175 credit. So reached out to United to resolve. United gave me two options: 1) have the $175 credited back to my credit card. 2) cancel the reservation and create a new one attaching the $175. I chose the first option.

I received a email from United saying they cannot credit back the $175 to my credit card. And it’s past the 24 hour window to cancel the reservation and create a new one. So I’m stuck with the travel credit and have no plans to use.

I sent customer service a complaint about the faulty information and they responded that there is nothing they can do.

Is there upper level customer service I can contact? Is there any options left to get compensation for the faulty information given?