No invoice? No service?

<p>I tried to move my line for almost 3 months but service was poor even though they still billed me then eventually moved my line then one day I only got a sms that my account is suspended and I have to pay an X amount , never received an invoice or anything so I don't know if they deducted those 3 months or not, but even though all that I paid but my line is still down?! Telkom really is one of the worst companies and every time they just say sorry.</p>