Pedros Hillcrest Quality and service

The service here is terrible with untrained employees.. we ordered a full chicken chips salad and cold drink.. we asked for the chicken to be cut into 4 yet they cut it into 8 and we did accept it cause we were hungry (did notify the waitress), we asked for the chicken to be weldone aswell yet the chicken was cold and not weldone .. when we called the manager (the most unprofessional employee yet) she gave us an attitude and began scrutinizing the chicken by taking a fork and knife cutting it up and debating the point that it is fine and told us to continue.. after arguing she goes in the back and brings us a half chicken.. we told her that a half of a chicken doesn't equate to the full chicken adding that we had already began to partake into the meal .. fair enough we had partially eaten 3 pieces from the full chicken but that doesn't even equate to a quarter and we didn't even finish the pieces cause it wasn't cooked right... and finally to add the cherry on top while the manager was there we cut 1 of the quarters up to find a nice strand of hair in the food (not sure if it was intentional)... we asked ti be refunded which the manager refused until I took a pic of the hair strand in the chicken... the manager is rude and arrogant which she failed to understand that if our food was prepared accordingly we would of ate and left as happy customers as we all were very hungry.. she firstly argues with us not assisting is then on top of it she robs us of our meal and then to be given food of that sort... what FDA measures are been followed.. this is food we don't appreciate having this kind of service and quality of food .. we are trusting an unknown person to prepare our meals safely but In return get this treatment it is unfair and we give the pedros franchise a lot of business in month ..