President Mnangagwa raised the price of fuel as he is trying to sort of the country's woeful economy and currency hyperinflation.
Before the hike the government was effectively subsidising the price of fuel for its citizens, but now Mnangagwa has more than doubled the price to reflect the actual cost of fuel and to try to rebalance the books.
Econet Wireless told Zimbabwe's Times: "We were served with another directive for total shutdown of the internet until further notice."
Zimbabwe's Times said critics said the government "sought to prevent images of its heavy-handedness in dealing with protesters from being broadcast around the world."
Media company MISA-Zimbabwe said the country was in a "total internet shutdown," according to reporting from the Associated Press (AP).
MISA-Zimbabwe also said they had text messages from Econet staff saying the situation is "beyond our reasonable control," ITV said.
Econet told Zimbabwe's Times: "Our lawyers advised that we are required to comply with the directive pending the court's decision on its legality."
"I have been deeply saddened by the events in our beloved homeland."
"There can be no justification for violence, against people and property. Violence will not reform our economy. Violence will not rebuild our nation," he wrote.
After protests began, AK-47-wielding security forces rounded up activists and detained religious leaders in a fierce crackdown, AP reported.
A gallon of gasoline increased from $5.60 a gallon to $15.20, and diesel went from $6.20 per gallon to $14.10, CNN reported.
The network said this means Zimbabwe the most expensive country in the world to fill a car.