WiFi

So, for about 3 weeks now we barely had signal. We have to reset our modem every 10 min and hope to get signal. If we have signal it takes about 3 days to download 1g. We are using our own data as we work from home due to no signal. We are looking at canceling because why do we have WiFi if we can't even use it when it's needed? We only have WiFi some night from midnight to 5am in the morning so why do we have unlimited WiFi 24/7 if we only have WiFi at off-peak hours? Please fix the problem?? This is not right?? Contact me urgent please!