Real old school stuff. Reasonable sized one time pads can be beaten by brute force. I guess you would need a one time pad on a roll of TP stretching to the moon.
No, they cannot. Even simple, small, one time pads using random sources are unbeatable. Each letter, space, number, or character, can come from an entirely different location in the one time pad so the transmitted data appears to be totally random as well. Nothing repeats so there is literally nothing to get a handle on to look for a pattern.