SharePoint online tenant storage figures not updating

Has anyone had a problem recently (within last 2-3 months) where the Tenant Storage figure top right corner of SharePoint Admin active sites page is not updating?

I recently deleted 1.7TB of data from a site that had been removed from retention policies, 1st and 2nd stage bins but the 1.7TB never appeared as available, and I cannot see that it has been used up?