Communication? Not VM's strong suit; which is odd for a 'communications company'!
Now I do get what you are saying; but if VM were to say that anyone on a particular set of packages can claim three pods, you know that many would simply do that, even if said pods were never unboxed - 'well I'm entitled to this so I'm going to claim it regardless'.
Now VM's Wifi guarantee isn't quite as good as it may seem at first glance, and, to be fair, their competitors are no better.
Now obviously you have an issue, but why do you think that extra pods are the solution? Maybe they are, but you admit the first one hasn't resolved said issue, so why think that another will do so? Maybe something else is going on?
So, rather than just saying 'I want pods', if you explain what your issues actually are, what are you experiencing, how are you connected to the hub (WiFi presumably), do you have any devices connected via cable to the hub, do they experience connectivity problems?
There is a massive wealth of experience and people on here willing to help and advise, but without details we are all a bit blind.