TERRIBLE SERVICE AT KFC!!!

I am absolutely not happy at all with the service received from the Northway branch. I have escalated my complaint a number of times only to get a resolution of 'meeting me half way'. My complaint was that all the chicken in the 9 piece bucket was dry, not tasteful and shrunken. This was a takeaway from the store on the 29th of January 2021. After numerous agents telling me that the manager of the Northway branch will call me, it never happens. So today on the 11th of February, I call kfc customer care and the agent advised me to call the Northway branch of which I did and was given Siva's cell number who is the manager of the Northway branch. So I call Siva and he says he can only meet me half way by refunding me on 5 pieces of chicken and not 9 pieces of chicken. Siva is not prepared to refund me on the 9 pieces of chicken after hearing my complaint. Please can this matter be escalated to someone more senior and feedback be given to me asap. NO ONE HAS BOTHERED TO CALL ME OR TO ASSIST ME.