They take their own time to fix their customers complaints

Wifi went down , they took almost a week to come fix it since they said it’s a fibre problem. After fixing it 3 days later I have no internet again . Called they told me they gonna fix within 72hours . I saw the people come today but they passed my house & they just never came back to fix it. I feel like these people are a **** they way they operate. I teach online I lose money if I don’t have Internet… yet I have paid internet. Why does it take so long to fix this problem. how do I regain the money I lost with these people. The worse 💔 you call everyday you get a new ticket . Useless