Cell C worst service provider with poor administration

Cell C is the worst service provider I have a data contract with them believe I've stop using it although the contract is still running as it is no longer working due the roaming issue. My biggest worry is they have poor billing system they don't run the debit on time there's errors in the invoice they really don't know what they are doing. Cell C is worse don't go with them my advice as you'll end up affecting your credit record because of poor admin. I have been calling for them to run the debit every month and I've funds always the worse is they are struggling to even do proper invoicing I am fed up I'm canceling and porting my number to Telkom.