Problems with BigAir Community Broadband

Recently been having random disconnection problems while in game, and I feel as though it is down to the ISP since two of my friends on the same ISP (different network in different houses) are also having the same problem, and while in game together, we all drop out for up to 20 seconds at a time, randomly, but always simultaneously. Has this problem occurred before? It's beginning to get rather frustrating -.-
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