Sometimes I report an issue, with my complaint supported by hard evidence (emails, documents, witnesses) but I do not get acknowledgement of the matter from a manager.
Example 1: not being paid on time, ever, but a random number of days after the date (e.g. contract says 27th, I get paid the following week).
Example 2: colleague guilty of omission or blatantly lying, supported by data, emails and witnesses (e.g. "I pushed my new code yesterday", github doesn't show anything for the last week or for today)
In some cases, I report this to my manager and he just says it's not a problem, or it's not... anything.
Example 1: "I am being paid late, it's been like this for six months, here are the statements", "you are being paid anyway"
Example 2: "code was not submitted, and we were planning to review it today", "then you have to change your plans, if it was urgent you should have prepared a plan B ahead of time"
The question is: How to handle a conversation where your manager does not address the evidence presented for a complaint or report?