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

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

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

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