Multichoice unwilling to reconnect my service

multichioce refuses to reconnect my services even after I have paid my outstanding fees. They keep asking me for a case number and I tried explaining to them that I do not have one as I sent the proof of payment via my internet banking which does not have any email account associated with it as everything is sent from a \no reply"email address. I even offered to send the person I am liasing with via facebook to send it to them directly but received no feedback. the one thing that ****es me off the most is that they are quick to cut the service but once you pay . reconnecting becomes a nightmare."""