I don't know your whole situation, of course but yes, if they are able to help you in some way, then they should. The Bible says we should "Share with God's people who are in need" (Romans 12:13). It also warns, "If anyone does not provide for his relatives, and especially for his immediate family, he has denied the faith and is worse than an unbeliever" (1 Timothy 5:8).
But even if they aren't able to help, they should at least show concern especially if they claim to be Christians. Jesus said, "By this all men will know that you are my disciples, if you love one another" (John 13:35). No, they may not have approved of your marriage (and frankly, you may not have been as sensitive to them as you could have been). But by letting this rift continue they are causing great hurt both for you and for them.
At the same time, don't let bitterness or anger take root in your soul. That would only make the situation worse, and would poison both you and your relationships. Instead, take the first step by asking them to forgive you for any hurt you may have caused them in the past. More than that, put your future and your whole life into Christ's hands. God's people aren't perfect but God is, and His love never fails.