Vodacom- customers don't count

I did in upgrade last year in November for my husband. His health is not the best and he is alone at home during they day. I did an upgrade on a Flexi 150 package. He doesnt need date, only airtime and a reliable phone. Big was my shock when the debit order went of for R 309.01. I am on the only breadwinner in the family and this is way out of my budget. I did not upgrade to a Smart Top up as I can't afford it. Today I tried to migrate to what I CHOSE and was informed that I need to pay R 905 for the migration. Really vodacom...this is how you rip of pensioners? I am so disgusted with Vodacom. I reported this matter a month ago and till date no one from Vodacom has even tried to make contact. As the only working person in this household I now have to pay over a hundred rand more every month for something we are not going to use. I don't have R 950 lying around to pay for the migration that I am sure is just another stint of Vodacom to get more money out of their customers. We pay for certain services and never get that. My daughter's voicemail has not been working for the past year. We report it and it works for a few days and it is gone again. Do we get compensated for the product that does not work???? Ofcourse not.