Presumably, you're able to control the DNS records of the old nameservers for your midnightclub.ie domain?
If so, you can implement a partial "fix" by just changing the IPs etc. in that zone so that it points to the correct server that are (for some reason) still referring to the old nameservers.
If the nameservers for your domain haven't changed (just the DNS information) then it either means that the nameservers aren't all serving the same information (have you checked this?), or otherwise it could only be due to local DNS cache - at ISP or on a local computer.
If it is due to cache, these will all expire in due course (already should have done) and the "problem" will sort itself out. If it's due to some other issue such as the nameservers not containing the same data, then there's a more serious problem which caused it in the first place, and obviously the solution to your particular issue here is just to make them both match (with the correct info
).