Welcome to the Community!
I was able to locate your Mobile account using your Community details however I will need to verify which of the mobile numbers you have are the ones having issues.
Could you at least provide us with the last 4 digits of the problematic numbers?
Got your PM, @srihanaj.
I have organised a contact to be made from one of our Mobile Specialists team on the main phone number we have on file tomorrow, 02 May 2019 between 11AM - 12NN VIC. Should you have another preferred time to be called, please do let us know.