Worst Service ever from Metro Fiber

Haven't had joy dealing with Metro Fiber networks, So they came and installed ONT 2 weeks ago and ever since the installation we haven't had proper internet access, the router goes off through out the day leaving us without internet, From the activation till now it has been unpleasant dealing with this people. I have logged a call on Monday for a technician to come and check the line since we didn't have internet but no one is helping. They don't call you have to follow up with them each time. I wouldn't advise anyone to go for this people because their services will give you grey hairs. All i am asking is for someone to come and resolve this at once. Some of us work from home and we depend on this internet. This has been the worst service i have received in my life. And from the reviews they clearly don't care about their customers.