Having checked over your connection I can see you are indeed under your estimates at the moment, before we can do anything further we'd need you to go ahead and try these basic checks first.
If that doesn't help, the next thing would be to rule your internal wiring out by plugging the connection into your test socket (which is under the faceplate of your master socket) and seeing if the drops stop.
This rules out your internal wiring, face plates and extension sockets as being the cause of these drops.
How to locate the test socket and set your connection into it can be found here.
If the problem still persists, please can you raise a fault here and let us know once this has been done?
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