Volkswagen India — Abs sensor claim resolved and finally cheated me

I faced an issue with abs sensor and speedometer irregular for my polo KL 41P 2806.
I have given the car to Volkswagen Cheranalloor showroom for this issue, service manager [ Tharun francis] claimed resolved the issue by changing the abs sensor under warranty.
At the same day[09/04/2021] abs sensor light started blinking and speedometer reading showing wrong value, my journey was troubled and discontinued.
They were hold my car in service centre for 3 days about to resolve this issue [apr 7, apr8, apr 9].
I took this car on nov 2018. At my first, second service not went well. Both 2 service i went to service centre twice to resolving my complaint (you can check the service appointment history). One complaint came after the service.
Same service manager dealing all my issue from the beginning.
Really frustrated !!!
Why Volkswagen cheating me for my hard earned money????
I want a resolution for my issue and change my service manager for resolving my car issue and future services.