Is this unfair ******ion?

been with them since 2010. I received an increase of R2k in January which I was not advised about hence not enough funds in my bank to cover the premium. now they intend to take January and February premiums! As a pensioner I cannot afford the premiums and advised them of such. I had sent them my proof of income in October as requested and they decided that I fall into a higher bracket. I have to pay rates and insurance on my property and on a tight budget cannot afford the extra R2k! Received a suspension message as well as the double debit notice?