Basically they don't offer SIM, just SMS services.
I just check all posted services and SilentLink does accept SMS and calls but sadly only incoming, there is no outgoing to avoid spam and abuse :/
So I made a bit more search for VoIP that can be paid with Bitcoin and other cryptocurrencies, and I found few more resources you can check.
Please note that I didn't use any of this services and I don't know how good they are working, or not working.
You can skip the first website ClearTalks, that looks dead, but others like MoreMins app opening fine for me.
https://cryptwerk.com/companies/voip/ Alternative for all this is to purchase prepaid SMS cards from other countries, that can be deliver to your home, but be careful for scammers.
Try asking or search for that in Goods:
https://bitcointalk.org/index.php?board=51.0EDIT:
Here is one more service that sells
prepaid SIM cards from Netherlands, but use at your own risk.