An unfixed cellphone after a payment, 31days ago.

After I sent my cellphone in for a damaged screen repair, and made a payment immediatly of R2007, it was sent to the Higher/Advanced Repair Centre of Vodacom to be fixed immediatly, as I paid. The cellphone came back, and I received messages that the Job was done. The cellphone was untouched and still broken. They said it would take 7-10 work days, as it is now a month later, STILL BROKEN! This is terrible service. Sending me back something after I had to pay so much money! I am furious!