Dear Mr. Tom,
Your current debit balance stands at USD5000. This amount has exceeded your credit limit of USD3500.
We have already informed you once (our letter dated 01 August) about this, but we have not heard from you. So we are forced to withhold all your current orders until your debt is reduced to within your credit limit.
Please send us a check to rectify the situation. Otherwise we cannot process your current or future orders.