Internet suspended without verifying whether payment has been done

This company gives us their account in FNB to pay our bill. If you do not send them proof of payment, come the third of the month, they suspend your internet without even verifying whether your money does not reflect in their account. Should clients now do their work? They have suspended my internet from the 03rd October, I sent them the proof of payment on that same day. The respond was that the ticket was assigned to Marinda Meyer. Nothing happened. I wrote them another email on the 04 October. They assigned the ticket to Tibello Ndlovu, nothing happened again. Today the 06 October wrote another email, this time it has been assigned to Sindiswa Mkalali till now at the writing of this review which is at 19H15 nothing has happened. It is now four days without internet that i have paid for. I do not even think they will reimburse me for this four days. Poor service indeed. when I phone them they do not answer their phones, I am not sure what to do to address this issue.