When it rains it storms

Constant outages in Johannesburg. Call center based in India they sent you generic steps to troubleshoot the issue. My router is in the perfect position, facing the correct direction. It works perfectly when Rain is up and everything on their side is functioning for this reason I cannot understand why I have to move my router. I can achieve over 300mbs on good days but these constant outages and lack of support is becoming a problem, looking at VOX to replace rain. No local support and too much downtime, I’m done with Rain.