Poor Service affecting my credit record

<p>I took out a cellphone contract with Telkom and my first instalment was in April 30 , funds were available on my account from the 28th April due to Public holidays. From the 4th May i have been receiving very irritating sms's stating my account is over due, i made contact with their call centre and was advised there were no funds on my account when they attempted to deduct on the 2nd May therefore there's an extra charge of R200, i argued that funds have been available a week before and are still available. the consultant i spoke to gave me a case number pending investigation on this matter, i have not heard anythin from Telkom but the irritating sms's keep coming through threatening to interupt my service due to non payment, my credit record is on the line here as a defaulter. i called again asked to speak to a manager i was told manager is on lunch not sure what time she will be back and hour later i re attempted was told the samething.</p>