Because I do not get the linden buy ???

[Nalytha]

Did you do "Instant Buy" or "Best Rate/Limit Buy"?

You will get your lindens immediately if you do Instant. You will have to wait hours, days, weeks, or months if you do Limit Buy because you don't get your Lindens until someone agrees to sell at the price you requested. 

[Nalytha]

Did you do "Instant Buy" or "Best Rate/Limit Buy"?

You will get your lindens immediately if you do Instant. You will have to wait hours, days, weeks, or months if you do Limit Buy because you don't get your Lindens until someone agrees to sell at the price you requested. 

[Alwin Alcott]

first of all... you ask your question to residents, not LL support, so we can do nothing for you immediate.

 

I think you made the mistake to put a limit buy order.

have a look here and read everything very carefully

https://community.secondlife.com/t5/English-Knowledge-Base/Buying-and-selling-Linden-dollars/ta-p/700107#Section_.1.2