Sorry to hear you're having some troubles with the mobile network.
Have you been able to check on our Network Status page for any reported faults or planned works that may be impacting your service?
If you can't see anything, best to have this raised with our Tech Support team either via the My Optus App or on 13 13 44.
Did we answer your question? Please mark it as a Accepted Solution and if you see something that was helpful to you or the rest of the community, giving a Kudos is only a click away.