Account paid but service still suspended

Good day, my debit order for my cell-phone on the 31.03.15 was rejected due to my fault. This is the first time it has happened. No contact was made from their side. I was just cut off. I made an eft payment for the amount due of R783.53, via STD bank into your FNB account, on the 07.04.15. The beneficiary reference is my cell number. I have emailed proof of payment to numerous emails, I have faxed and I have taken a copy into the branch. To this date I am still not re-connected. This is the only phone I have and it is a business phone. It has been almost 2 weeks. I have not received any feedback or response from the emails I have sent. Just the usual automated response email. I went into the branch again on the 18.04.15 and was told that they are still looking for proof of payment because the beneficiary reference is causing a problem to find and it will take 5 working days. This is unacceptable. They have my proof of payment with the date and amount, sent from me and my bank. It is not my fault they are having problem locating it in their system. Surely they can re-connect me in the meantime?