It sounds to me like you may have been cloned. If your connection is dropping out constantly then your either using a cloned modem or ahve been cloned.
Before you take this any further I suggest you take it up with your Friend my Friend
Of course it could be a completely different problem and then you will need to contact VM
Check all connections to and from the box. Make sure if your on a wireless connection that the router is NOT near any heatsource ie a radiator or even placed ontop of the VM StB