Double debited.

After a pretty rough year I check my bank balance to find out I've been double debited. I called vodacom last night (just after the debit) and they say this has happened to 90% of their debits with a few banks and they don't know when it will be fixed. I call again this morning and on my asking when I can expect this to be reversed as it will cause my other debits to be reversed she says IF I want the debit reversed she can put me through to someone to log a query. This is COMPLETELY UNACCEPTABLE. I am furious. I am sure its not legal to debit money that is not owed. This service is shocking. Every small debit order that is reversed will now cost me money, the person least at fault (unless choosing vodacom is how I am at fault). Having 3 contracts with vodacom and having had contracts with vodacom for years I am truly disgusted with not only this kind of error which I don't expect from a big company like this, but even more with the lack of understanding, sympathy or willingness to help I've been shown by every staff member I've spoken to. I asked to speak to a supervisor every time I've called today and been disconnected/hung up on every single time. I will NEVER renew any contrac