Phone Repair

I took my iPhone 6 in for repairs on the 23rd of August to get the screen fixed. When i took it in, only the screen/lcd was broken. Upon receiving my phone after it was repaired i realised that the front speaker and selfie camera were not working where as before i took it in it was working. When i went back to the store i was told that i wpuld have to pay an additional R650.00 to get the speaker repaired of which i refused as i would not pay for a fault i was not aware of and was not there prior to taking the phone in. This is very disappoint. They fix one part of the phone and ruin the other part.