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Thank you. Well because of the payment which has been back dated it seems he has got it because the money has gone into their bank this week! The only concern is that there hasn't been a letter confirming he has got the allowance where when she rec'd hers about four years ago, they said she had got and that the payment would start from such and such a date.
I feel that he has got it but the letter could have gone astray, delivered wrongly or lost I the post. Anyway I think I will advise them to write to ask the status. Thanks everyone.