You will have to cancel it yourself.  Check the article below.

Resolution for 'account selfemployed issue: 'cancel account self-employed it is not for me.' available: Yes.

The account selfemployed 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 account selfemployed issue yourself by looking for a resolution described in the article. If it is a complex account selfemployed issue or you are unable to solve the issue, you may contact us by clicking here or by using other account selfemployed support options.

For more information about resolving issues related to account selfemployed in Quickbooks/QBO or to get support for the issue 'cancel account self-employed it is not for me.', click the link below: