Poor service from SADV

Hi, Between SADV & Vumatel, someone must take accountability for the ISP in our area. WE RECEIVE VERY POOR SERVICE! We as customers cannot pay monthly in full but are not fully benefitting from what we pay for. Not a day goes by without having connection issues. SADV has to strengthen the signal in our area, since Vumatel confirmed last week that SADV is our ISP. Most customers are working from home & this is affecting our jobs & our lifestyles. Regards Rolanda