Handed over to SCS(PTY)Ltd but no Invoice received

I have phoned lancet for an invoice after I got a sms from then stating that I owe money and if I don't pay I will be handed over to debt collectors so I phone them and ask for an invoice and told them that I will not pay if I don't have an invoice and up to today I have received no invoice.<br> It is not that they don't have my email address but they always sms then I have to phone and ask for an invoice. SARS does not pay if I don't produce an invoice they don't look at your bank statement even if you highlight it.<br> If you want somebody to pay you post or email a statement not sent them a sms!<br> Lancet has my information please use it and sent me an invoice or you can pay SCS(PTY) hundreds of Rands to try to get your payment of R113.10 that I will not pay if I don't get an invoice.<br>