Answer
The letter was written on a typewriter which has a problem with the middle row of letters, which print spaces instead. The letter should have read:
Dear Sir,
I recently visited one of your outlets to buy one of your typewriters. However, as you can see I am having a small problem.
The middle row of the keyboard appears to be faulty.
I would be very grateful if you could despatch a replacement by return post. Failing this, could you please send an engineer to resolve this problem as a matter of urgency.
Yours faithfully,
Mrs Middins.
??
Puzzle 156
Here are some less well known proverbs. What is the missing word in each?
Loyalty is worth more than ?.
He that cannot pay in ? must pay in person.
Shameful ? is worse than shameful eating.
Don't say ? until you are asked.
Payment in advance is ? payment.
Answer
Loyalty is worth more than money.
He that cannot pay in purse must pay in person.
Shameful leaving is worse than shameful eating.
Don't say no until you are asked.
Payment in advance is evil payment.