phone has more damages after repairs

I am so disappointed and disgusted at the service that vodacom offered. My phone went away on the 8th of August for repairs and only came back on the 25th. Only to find that after switching the handset on, it was installed with new software and I could not access user menu as it was showing some settings that could not be removed. Vodashop could not assist with resetting it to correct settings and I had to use my airtime to contact witbank repair center for assistance but still could not be guided on how to remove developer settings/factory mode. My phone had to be booked in again to witbank and having to wait for another 3 weeks without my handset makes me sick. Why couldn't technician verify everything before releasing the phone? I am sick of vodacom