inefficient attention to registered mail

I sent a registered letter to the British pension dept, at Knysna Post office on the 23rd September and phoned this morning the 5th Oct and they traced it and said it had left SA on the 4th October, yesterday.<br> This is a second letter to the pension dept as my mother has changed her address to here in Knysna, the first letter they never received so she did not get her proof of life form, thus they have stopped her pension! <br> How can we survive with services such as these?<br> People depend on their pensions. I sent the first letter in February this year which they never received. This is not the Knysna post office, its probably in Johannesburg.<br> Kind regards,<br> Maria Koster