Heartless finance providers

I am the taxi owner of 2 mini-busses and was financed by Sa Taxi Finance. My monthly payments have been up-to-date for both mini-busses until the lockdown started. We were restricted to work and ended up not going to the taxi rank at all, therefore kept our taxis at home. I received a letter from them indicating that they will give me relief on my payments and it will not affect my credit score. I still paid the amount I was able to from my salary, but received an SMS to pay amount to full amount to avoid legal action. Almost every taxi owner complains about the same thing. We would like the government to charge them because they are busy making money during this lockdown period. They supposed to give us a 4-month debt relief just like other banks. Where are we supposed to get money to pay them when we have not been working?