Welcome to the forum @tdr.
Please avoid making duplicate posts if you can. The search at top right will help you find if there is an existing topic open that you can join. I have merged your question into this thread as it’s one of the longer ones about gaining height using magickal (or energy working) techniques. Necroposting is welcome if it adds to the conversation. 
I myself claim to have gained a height over 6 months using qigong,.. I can’t prove it as I took no evidence, but I can go into more details about what I did, which I mention in post #2 above.
Please do not offer or accept payment for work here of any kind, it’s against the rules.
Please do make your Introduction HERE [ ← click me! ], which we need per the forum rules and see our posting guidelines in the FAQ.
Points to cover:
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Do you have any practical experience in magick?
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If so, what exactly do you practice and how long have you practiced?
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Do you follow any specific system or tradition?
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What are your areas of interest?
Here is a getting started with magick guide.
You’ll want to get your spiritual hygiene sorted out, and start work on developing your astral senses.
Then when you can know you have a decent chance at avoiding impostors and parasites then try the first contact guides we have on here.
For reference:
The rules are here - please read them.
The posting guidelines are here in the FAQ
The Terms of Service are here