3 weeks without internet

I have been without internet for 3 weeks now. They simply just don't care, but believe me, the end of the month they are quick to take your money. 15th of March I logged my second call(now 2 weeks of no internet). No help. Yesterday I logged another call(now 3 weeks) and they phoned me back and said they will send out a technician. Guess what? Nobody came. Now I get a SMS saying my radio needs to be upgraded and the one Jenny installed 3 years ago is outdated and I need to pay R2850 to get a new one. In the first week the technician mentioned my radio is an older version but did not once say my internet will not work again until I replace it. He simply had to make a call to "tower people" and all was good he said. Now the story is they upgraded their towers and my radio is not compatible? So every 3 years I need to install a new radio? Its ridiculous!! If Jenny and the public does not see any problem with this practice I am truly sorry for my bantering but at the moment I feel ******!! Because for them its okay in their business view to deduct R1199 next week but they did not provide the service I was paying for and it will remain that way until I pay them R2850 for new radio!? Sounds fair right?