When someone states that all gifts from GOD are supernatural and that you are not getting something from GOD if it is not supernatural, it does not good to show them the Word of GOD tells us that every good thing, like warm sunshine, cool water on a hot day, Spring rains for planted food crops, the smiles and love of happy children, and the companionship of our family pets are GIFTS FROM GOD. Their minds are shut off from reasoning things through because they have been snared by their 'experiences' which are so easily deceptions which they have no discerning spirit to detect!... And when the 'experiences' don't happen for 'some reason', their faith in God's Grace in Christ Jesus wanes quickly.
Are there real miracles? Oh yes! I have been blessed by such. BUT my faith in HIM is not founded in the gibmedat causemyfaithispure mentality. THAT would mean GOD is a respecter of persons. A sure sign that the experiencers are being deceived is the growing arrogance of their proclamations, the haughty airs of their assertions toward those they accuse of sagging faith that their god will not honor.
I have seen miracles in my life as well - often it's been when I wasn't expecting it but it came at just the right time. Another sure sign when someone is being deceived is to WHOM they give the glory for the miracle. Is the one who prayed, spoke in tongues, laid hands on another, the one who is praised and glorified or is it Jesus Christ - who deserves all glory? Our Heavenly Father delights in blessing us and meeting all our needs according to his riches in Christ Jesus. Those riches are bottomless and HE is who deserves the glory not me because what I prayed for happened. Human pride is sneaky.