Soft locked my phone after payment made

On the 3rd of August I received a message saying I must pay my MTN account via eft to an Absa account. I made a payment of R 470 into that Absa account on 7 August 2015. On the 13 August I get an sms saying my phone has been disconnected until I pay the amount. I immediately sent an email with proof of payment to mtn customer care. Received no reply - then sent it to mtn collections email address and got a reply that they will respond to my query in 8 working hours. The 8 hours came and went and no response. I attached the proof of payment to both emails. I am livid as I am unable to call 808 personally because I'm not around and the fact that the stupid MTN system can't pick up a payment - a week after it's been made. I've had a contract with MTN for close to 15 years. Only missed a payment once because my credit card had expired. And this is the thanks I get ! Mtn accounts people are idiots!