when you say family, do you mean wife and kids? or your parents?

if it's your wife and kids, then just keep trying. i agree with the suggestion to go there yourself, so you can also explain your side.

if it's your parents, chances are, your request was rejected due to old age. don't know why old age is such a concern for granting sponsorship, but it is anyhow.

good luck 2u. just keep trying.