Vox debiting our account with out any installation or services being provided .

I have been trying to get hold of someone at Vox the entire day today , This is after our colleagues have been speaking to the Accounts manager and his manager to resolve our issues which started on the 25 September 2018 , The accounts manager from Vox has made us sign 2 contracts initially for a LTE line which they could not provide and after that a second contract dated the 22.10.2018 . From the dates the contracts have been signed we have had no installations or any equipment provided from Vox to our surprise we had a debit order gone of our business account first on the 31/10/2018 for a amount of R3428.42 and a second Debit order on the 01/11/2018 for R1374. When queried with the Accounts manager and his manager we are told that we will need to sign another contract . How can a company without providing services debit a customers account ? The accounts manager to our account has only given false promises . I was forced to put this post through as i have had no joy from inspite of trying to call the MD of Vox which i was informed is MrJames Smith and have a left a message .