Suspended service

For the past couple of months now, I have been getting whatsapp messages for Kelly saying my debits orders didnt go off. The very first problem was they were unable to locate and allocate a payment I made online using payfast. I had to send multiple emails with my proof to get them to credit my account. This month they suspended my service, I called, I emailed proof that my debit order went off and no response yet. I am unable to use my phone. I will be away from home this weekend and will not be able to use my phone. This feels incredibly unfair as my account is paid in full.