paid for webhosting but have not received server address or webhosting guide

I've coded and finished building my website. I don't know if I'm missing something but I recently paid for webhosting online, but only receieved an emailed invoice, no server address, no password, or username. No webhosting guide at all. Have I been bamboozled, or is there a step I'm missing?

This is probably extremely trivial but please help clarify the webhosting process for me, immediately post-payment.

Thank you