Not helping and accusing us

We have the HomeUncapped internet. The last 3 weeks we are struggling with internet speed. We need to call them every day and ask them to reset the line to get the speed back. Today we called them and they just say there is nothing that they can do, we moved the router and it is our fault. We moved the router 1 cm to the side when we had to reset it once again. 2cm will not make a difference.