SanTa, if you have payed for a package for 1 month at the end of the payment period your storage space and associated services will return to the state they were in before payment. Your 400Mb count will have increased as it does automatically upon the creation of your website however it will only have changed by 2-5Mb within a 1 month period.
Something to note is that you can extend the payment period up to 24 months.
Jack of all trades in development, design, strategy.
Working as a Support Engineer.
Been here for 12 years and counting.