Hi Gert-Tom,
I doubled checked my configuration and I am experiencing the same problems.
Incoming calls for the Budgetphone provide works for some time and then something goes wrong. I too can not receive any call on my Budgetphone account via VoXaLot.
Similarly to your situation: outgoing calls using Budgetphone works fine. Incoming and outgoing calls using VoipCheap also works fine!
Ruudsje, do you have any input on this? Is your config still working for you?
Thanks
Arjen