Halt execution of pasted multiline commands

I pasted a long list of commands into Bash, and in the middle of execution, I decided I wanted it to stop. Ctrl+Z and Ctrl+C did nothing. It just continues executing line after line. In the end, the commands required a service to be running, so I stopped that instead using another SSH instance, and the commands errored out one after the other. If I hadn't been able to stop a service to do that, how would I stop the list from continuing to execute?