asking for an extension of credit

dear mr.Hanh

thank you for you letter of october 30th. we fully appriciate your concern.and would like to assure you that we shall undeavour to settle our account with you in immediate future. we wish to propose the following:

an immediate part payment to imported machinery delayed by cheque post-dated to dated to augst 29

we would like fsix month's extension of credit , on which we will pay interest.as you know,there have been problems with you payment by instalment within six months,plus interest.

thabk you for your assistence and patience, also for the excellent service your company has given us in the past.

your sincerely