I invested EUR 500 in Febr. this year with cryptechs and forgot abt it. Today somebody phoned me ( cannot remember his name ). He told me my acount shows EUR 703,25 and he offers one bitcoin at abt EUR 8.000 to be sold after 2 weeks with EUR 4.000 profit. I told him that I have no cash presently and cannot use this extra ordinary opportunity. The guy almost went crazy and one word took the other when I finally asked him to return my investment, he can keep the earnings ! He said if I am ready to pay min EUR 250,- commision to cryptechs and 30,5% tax on the whole amount ( not only on earnings ). I declined for the time being ....