20 days 28 phone calls still no help

On 11/12/2015 I made an eft payment on my account on 15/12/2015 vodacom again debited my account.i have phone them every day since to resolve the matter. 9 times I have been told a service request has been issued and someone will contact me shortly.noone has contacted me yet.i have even faxed and email proof of payment 7 times and still vodacom has not got back to me or tried to help.