Inaccurate quota size

Inaccurate quota size

My Zoho Docs Used storage showing 5.01 GB and Total storage 5 GB. So it is over quota. 
I don't think it is the case, because i don't have that much data on my Zoho Docs account.
I deleted data from Trash but it doesn't help much.

Can you please check my Used storage and recalculate it if needed?