My situation is very much the same – I live in a small hilltop village, and we do not have any signal except to receive or send the occasional text.
A company called Selectra, in my opinion, misdirected me into having the “SFR Cloud 10 Go” service which is for telephone and internet at a total monthly cost of €25.
It has only worked for approximately a third of the time, and calls made to a French mobile are expensive. I have considered cancelling the SFR contract and trying to get connected back with Orange but have been advised that it will cost me over €200.
When the SFR internet is working I have recorded a maximum download speed of just 0.68 Mb/s.
David N TALBOYS, Aude