Truck drivers were allegedly forced out of their vehicles, which were then used to block roads.
The road blocks led to many businesses not opening on Wednesday as people were not able to get to work.
Topstar taxi association chairperson Johan Mavundla said they want a reduction in fuel prices.
“This is hard for us. Last week we were talking about fare price increments, which we haven’t done yet, and now the petrol price goes up by more than R2 a litre.
“As the management we are able to talk to our people to calm down, but this time they didn’t want to hear a word from us. Instead they recruited other associations and took to the streets.
“We have no choice but to rally behind them because we know this [price hikes] will collapse our business. Taxis drive for the entire day. We are the biggest petrol buyers as we ferry passengers, so this is hitting us hard,” he said.