Vuma super sonic

I have paid my internet service provider (super Sonic)in full since the 18th of April, I have been calling and even today they haven't helped me. This thing is having a bad impact on my whole family as my children are not able to receive and do their school work since we are without internet and my younger sister is struggling because she's working from home and she needs internet as well. I am really disappointed and I don't know what to do anymore because I always call but they don't resolve the matter. They only gave me reference numbers but till today we are without internet.