Just be careful, I would expect that the usage will be allotted to your Blended counters. It would be wise to give TelkomInternet a call. Also, I would explain to them that you left the account running in Local-Only. You might be lucky and it counts towards Local Only.
However, as you correctly point it, it will default to Blended on disconnect. There are a few safeguards you can put in place though - perhaps using static routes, Cfosspeed, Firewall etc
However, as you correctly point it, it will default to Blended on disconnect. There are a few safeguards you can put in place though - perhaps using static routes, Cfosspeed, Firewall etc