Dataset not updating "Internal Service Error"

Who else loves this error:

"Internal Service Error". Vague enough?

For the past few weeks I have been unable to update the dataset. When I publish it from Power BI Desktop, or upload it via the online service, it doesn't seem to replace the old dataset at all. On refresh, the internal service error appears.

So far, Microsoft support has been ineffective on helping with this. We've taken many steps but they don't seem to be tracking with the real problem: It's not an issue with my file or my sources not updating, it is an issue with the service not retaining uploaded datasets.

My only choice at this point would be to upload the file under a different name and completely rebuild the reports, which is not a sustainable solution.

I'll take advice from the community, but I basically want to get this message out that these errors can't continue. Nobody seems to know how to resolve this "internal services error" from all the forums I've looked at.