Irrelevant information shown in C360 for NPS Surveys

To be more precise with my explanation, let us suppose there are two Accounts A & B. I have sent out NPS survey for Account A and not for Account B but still those survey show up in Account B's C360 with a score of zero.

Also, since we show and calculate the NPS Score of the last 6 NPS Surveys it is possible that even if there is a NPS Survey for Account B (sent before Account A's Survey), it will be overridden by Account A survey with zero score.

To help clarify, I think this is what Ankur is referring to:

In configuration for the NPS Section of the C360, you can specify that you'd like to see a calculated NPS score and the timeperiod over which this score should be calculated. See below where I select 365 days:

However, the issue can arise as the NPS Score widget only looks at the 7 most recent NPS surveys, so if there are more than 7 surveys that were sent in the last 365 days, then only the 7 most recent surveys will be calculated when determining the NPS score. 

To add to this, it appears that this looks across the last 7 surveys ever sent, not the last 7 that the customer responded to. So if you send a couple smaller surveys or different surveys per geography (that don't affect the customer in question), then this can easily show null, even if there are responses.