The VOLT upgrade takes 14 days on the VM side. You also need a Hub 4, so if you don't have this, it will also need to be supplied. Also check your O2 account and your VM account details are EXACTLY the same, i.e. Names, Addresses etc.
You can also check the conf settings on the Hub. It will show what speed has been provisioned.
It's Configuration tab - Primary Downstream Service Flow - Max Traffic Rate.
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