Internet keeps dropping out.

[PaulBeard90]

Ive lived in my new property since 8th of June and I've had 4 different Engernieers out and this problem is still not fixed. We've had I ternet and external Engernieers and one who did both. One said outside was fine so it's inside where the problem is. Then another said it's outside that's the problem. Both did what ever they did to apparently fix it and I still have problems. Then the third comes out who does both outside and inside and says get the router changed as it's 5 years old. So we get a new one and I stole have the same problem. So I had Engernieer number 4 out today and he says they all scratching heads about the problem. So he looks in the box outside and I have a text saying he's done but I still have the same problem but seems to be cutting out more than it already did. It's like these Engernieers look at the box outside or in or the socket and if there eyes it machine says it's fine then it's fine but it's clearly not. My advice to them would be, when you have eliminated the impossible, whatever remains, however improbable, must be the truth?