I'm wondering if there is any Spark techs here that might be able to give me insights into a problem we're having.

My retired mother recently moved to a Vodafone wireless based landline (and data). The data aspect is working fine. Calls to/from other Vodafone numbers are fine. For some odd reason, relatives on telecom/spark landlines are unable to call her, and any time she calls them she just gets an engaged tone. She can call their same numbers just fine from her mobile, but not from her landline. 

Unfortunately Vodafone seem to be at a loss as to what is happening. I wondered someone from the other side might be able to see something? It sounds like something went wrong porting her number to this new service.

If someone is in a position to check this out, I'm happy to PM you her number.

Cheers!