TBH , if the only network you have problems receiving calls from is Vodafone, then it’s unlikely to be anything other than an issue in Vodafone’s network, irrespective of what they say , the origin of this ‘data’ problem is no doubt tied up with the porting of the number between providers , the chances are that a data error in VF ‘s own ‘network’ causes that network to route calls intended for your landline to a destination still within VF network ( in layman’s terms VF ‘data’ still indicates that the landline number is part of the VF network , so keeps calls to the number within VF network even though you are not connected to VF , so the call can never connect, rather than sending the call towards ‘BT’ network, as all other networks do.
There was a similar post many months ago on here , no incoming calls from one network , every other network, both mobile and landline were OK , ( AFAIR it wasn’t VF ) , unfortunately that issue was never resolved, as that ‘BT’ customer ( who was previously a customer of the network that calls failed from ) , couldn’t get their ‘old’ provider to engage with the issue ( basically the attitude was ‘not our customer not our problem’ ) and if the issue was reported by the customer making the call , (who was a customer of the failing network ) stating, ‘ I’m calling this number ********, but cannot get through’ they got the stock answer of ‘ it must be a fault at the other company’s end’ , no attempt at investigation.
Obviously the ‘receiving’ network provider cannot force the outgoing network to investigate , it needs that other network to engage, and frankly they couldn’t care less, it would be like not receiving a letter sent from America, but instead of asking the sender to check what the American post office did with the letter , you ask the Post Office here why you never got the letter ( without knowing it ever left America )
…with that similar complaint, the BT customer actually changed their number to one that had never been ported , and although all their contacts had to use this new number , all calls , even ones from the ‘problem’ network get through.
