I don’t think you called QuickBooks support. It sounds like a bogus company posing as Intuit. There is a lot if that going around.
See if below helps with your H202 error. You can also Google it for more results.
Resolution for 'company posing issue: 'upgrade pro 2015 to premier 2018' available: Yes.
The company posing issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the company posing issue yourself by looking for a resolution described in the article. If it is a complex company posing issue or you are unable to solve the issue, you may contact us by clicking here or by using other company posing support options.
For more information about resolving issues related to company posing in Quickbooks/QBO or to get support for the issue 'upgrade pro 2015 to premier 2018', click the link below: