[problems buying L$]

I can't buy L$ since yesterday. I tried through the site and also inworld. Can anyone help please? I have a paypal account

[Im unable to buy lindens from website or directly from SL browser.]

I've been trying to buy Lindens online as I've done other times (through paypal). The transaction seemed to have gone through, it said to wait a max of 20 mins...but nothing. Who can I contact? It's more than 3 hrs now...