Harrassed over payment

It is covid19 and my job no longer exists. I ored over R11000 and paid up until I had R299. This company has now raised my bill R400, and will keep calling me 3 times aday as they raise my bill. I understand the level of poverty and misery they are facing but they should see that I have honored and paid without being harassed. I cannot go and rob people to people R299, they keep raising my bill. For what? Everyone is trying their best and I for one have paid you promptly and shouldn't be treated like this. I chose to use your services and you are now getting on to me as if I R1000,0000?. Stop harrasing me like this. I don't want my bill to be raised because it shows you only care about yourself receiving pay. If I cannot afford to pay R299 and then you raise my at R400, do you think I will afford it. Today I have receive 5 calls on this number *** and everytime I pick up, the phone cuts down. When I call back, one of the callers replies and wants me to fill another document because my bill is now R1000, this is *******. If TFG is poor, do you want to get money from to save you from poverty? According to recourse, customers aren't there to be threatened or harrassed.