Service Tax - Registration amendment

The assessee has started providing a taxable service not mentioned in the registration certificate.  However on going to the aces site, due to a technical snag, the registration certificate is not getting amended.  Hence the assessee is unable to pay the service tax on the new service.  In such a case, the interest on service tax is unnecessarily piling up for no fault of the assessee.  Is there any remedy for this.  Help desk has not been able to resolve the issue.