Moved number over to Lebara. I can call people. People can't call me

I have moved my number over to Lebara recently. Change took place 20th June. I can call people and theyll see my original number appear, however they cannot call me back. The message says the number you have called is not recognised.

Something might have gone wrong with the porting process HUITONGJ1, please give customer support a call or message so they can investigate whats going on.