I'll stick to the clear words of the bible.
Why don't you stick to the clear words of the Bible when it comes to spiritual gifts, then? The Bible mentions certain spiritual gits and says they are given as the Spirit wills. You would have us believe that they are not. So I'll stick with the clear words of the Bible.
What have you witnessed? Incoherent gibberish and babbling supposedly tongues? Tongues in the bible were known, earthly tongues.
In Acts 2, people present understood the languages. In I Corinthians 14, the situation was that one would speak a language others present did not understand. Paul contrasted doing so with speaking with his mind, so apparently the speaker did not understanding the language. The language is to be interpreted by a gift of the Spirit, and the interpretation edifies the congregation.
Paul also suggested the possibility of speaking in the tongues of men and of angels. He doesn't give much commentary on that, but the possibility is mentioned. I haven't heard it myself, but I have spoken with and corresponded with a number of people who have heard 'speaking in tongues' in a language they knew. There were numerous accounts of this happening at Azusa Street and at other meetings during the early days of the Pentecostal movement. You could read about it in 'The Apostolic Faith', the newsletter of the Azusa Street Revival.
Have you witnessed actual miracles? Had someone straightened another's leg before your eyes?
I've talked with numerous people about past healings, healed from deafness, from being in a wheelchair from lupus. And also, people will say they were healed from something internal that I can't see with my own eyes. But most ailments aren't something you can see physically. But there was one gril back when I was in middle school and went to a Christian school, who had a serious visual impairment. Her eyes were severely crossed. She wore 'coke bottle' glasses that magnified the size of her eyes if she looked at you. She had obvious eyesight problems, and not regular near-sightedness. An evangelist came to our church, and near the end of the meeting shared a testimony about cancers falling off a woman he'd laid hands on in Chicago. So he laid hands on the sick. It was a large church, and this night there were a lot of guests. He walked one woman out of a wheelchair. I'd never noticed her there before and I didn't know if she could walk without the wheelchair or not. It was really crowded up front where he was praying for the sick, injured, etc.
But the next day I went to our church-affiliated Christian school. Before school, if we got there a bit early, we had to wait outside for them to open the doors. I was talking to another child who said that the girl I mentioned with the vision problems had been healed. I went over by her parents car where she was waiting, and she had no glasses on. Her eyes looked normal. I asked her what happened. She told me about the preacher laying hands on her and eyes being healed.
Or prophesied beyond what the complete word of God says?
The way you word your question causes me to think you may have some ideas about the role of the Bible vis a vis spiritual gifts that are not taught anywhere in scripture, or that rest on a bizarre misinterpretation that makes it mean something different from what it meant to the original audience (e.g. ofII Timothy 3).
Acts and I Corinthians 14 gives us a hint at the type of prophecies that were spoken in churches. We don't have the text of those prophecies in our scriptures. Agabus said something about an upcoming famine. We don't know what else he or the other prophets prophesied in Antioch... because it isn't in scripture. We know that there were supposed to be various prophecies spoken in church meetings as per I Corinthians 14. But those various prophecies aren't in the Bible. It doesn't tell us specific secrets of the hearts of unbelievers that visited the assembly that a prophecy might be about. Those aren't in scripture. The Bible is rather clear that not all these types of prophecies are recorded in scripture.