Inbound call not functioning

[voxasia]

I did the following test after I stop receiving inbound call via voxalot.

1) Inbound call via pfingo DID not working
2) Inbound call via freedigits DID not working
3) Inbound call via voipdiscount DID not working

* all registered on voxalot

Other issues :
1) Outbound call via voipdiscount on voxalot not working
Solution: outbound call to voipdiscount sip uri via voxalot and using voipdiscount to call forward, works ok. Tested on webcallback (At least I can use the webcallback service).

The registration server I use is us.voxalot.com.

I'm not sure whether anyone else is have the same problem but kindly help me to solve the above problems. I'm using the premium account and these problems are costing me more money since I have to set all my SIP providers to forward call direct, in order for people to reach me. I spend 75% of my time overseas.