we do not share your data with anyone and there are many ways to control the visibility and storage life of your data here.
but the internet is a public space and you should always assume your data could be compromised.
be smart with your password, use tor or a vpn, and use pgp for sensitive communications.
If payment has been sent and the order went through the seller should be able to sort it. It sounds like your seller isn't able to help so you will have to wait on transaxe getting back to you. It's slow going mate but they will be able to help you.
It does not look like you even bought it. My thinking is the rarity of the occasion is worth the buy, because with the last reviews going back 260+ days it might be fair to assume it will roughly the same wait next time and this stuff will be limited in supply. I ordered 2g of it and chances are i will wish i had ordered more, and then it will be sold out.