When, despite previous efforts, an invoice is not paid on the agreed date, the first thing you should do is contact the client . Perhaps the client has not acted in bad faith and it was simply a mistake.
Sometimes the reason for the delay can be as simple as the email going to the spam folder , the address being incorrect, or you simply not seeing it.
When you call him telegrama sa pilipinas and remind him about the bill, he will probably solve the problem quickly.
However, during this call, it may also happen that the client tells you that he cannot pay the invoice due to a lack of liquidity. In this case, you can agree on different solutions :

Delaying payment of the invoice: If your client believes that in a few months their situation will have improved because they are still waiting to be paid for various jobs, you can postpone payment until that date.
Splitting the payment : another interesting option, especially if the amount of the debt is high, is to split the payment so that it is paid at different times.
Bartering services: Depending on what your client does, you may be able to come to an agreement and have them pay the invoice in kind. For example, if they have a computer repair company, they may be able to give you a computer to settle the debt.