1. "Not at all" is an expression used to respond when someone thanks you. It means "you're welcome" or "no problem." For instance, if someone says "Thank you," you can reply, "You're welcome," or "No problem," or "Not at all." Another way to respond is "Don't mention it," which is also a way of saying "my pleasure." This indicates that you were happy to help and they shouldn't feel the need to keep thanking you.
2. "Thank you anyway" or "Thank you all the same" are phrases used to express gratitude even if the situation didn't turn out as expected or if the help provided was not ultimately beneficial. For example, if someone offers help but it isn't needed, the person receiving the offer might say, "Thank you anyway," to show appreciation for the thought and the offer.
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