that BQM looks like a fairly typical overutilisation pattern - i.e. it's nothing particularly wrong with *your* network, it's that there's too much load on VM's network in the area, so it struggles.
Unfortunately, there's not a huge amount you can do about this - you can and should contact VM to register the fault and press them for a fault reference number - it's likely that they are already aware of the issues in the area and will probably even give you a date by which they think it will be resolved.. however, if you spend some time browsing around here you'll see lots of other people with the same issue and lots of threads about how committed dates for resolution have slipped and slipped.
Realistically, you have two options, 1. put up with it and hope that VM eventually provisions additional capacity (or enough people get fed up and leave) or 2. seek an alternative supplier.
If you are mid-contract it's worth leaving the BQM running and use it as evidence of poor service - VM will try to sting you for early termination fees, but there are examples here where people have been let out of contracts early due to performance, and those BQMs are the supporting evidence you'll need for that..
