Poor service

what a bad service happened to one person in a short space of days.

Firstly they were late for the installation, second you guys debited more than what was supposed to be debited. the guy at sales by the name of Alexander said the debit order that will happen is a pro-rata amount that wont even be more than R50. this morning to my surprise i have been debited R250.74. WHY HOW.. When the first debit order was supposed to be on the 25th of June. I called your accounts department and no one have answers for me. Urgently give me answers as the lady by the name of Nompumelelo at customer service couldn't even get hold of that Alexander guy