Trash service

I have been in and out of hospital and unable to pay my contract, I am now trying to sort out my account and to my shock vodacom says I used date of over 5000 in one month. This is after I called and asked them to close my data open line twice. The second time a team leader was supposed to call but surprise,surprise, they never called. Now again I am calling then and I cannot speak to customer care so I can get a breakdown of my usage because the account is in arrears I am being told to pay first so I can speak to customer care.

Its my fault my account is in arrears and that is not their issue, but me having to pay over 5k cause someone did not do what I asked is not right.