Matrix

I received two invoices when I travelled only for duration of 10 days. Why?

Various networks have different billing cycles. For example, the bill cycle for Malaysia is 17^th to 16^th of a month. That means the customer will be billed on the 16^th. If the travel dates are from the 10^th to 20^th then the first bill that the customer will get, will include the rentals for the entire duration (which are charged in advance owing to the norms of the worldwide telecom policy) and a part of his usage i.e. from 10^th thru 16^th. The next bill will contain usage from 17^th thru 20^th. Hence, the customer gets 2 invoices, despite having travelled for only 10 days.