Frustrated with my laptop with no resolution.

My initial problem was a screen issue, which I was told the logic board has been replaced after I fetched the unit the touch ID was not working which I booked in 2 days later and told that the logic board needs to be replaced again. I picked up the laptop again and now the touch bar barely works. it is well over 3 weeks now and I do not have the time or patience to keep dropping my laptop off to a work centre that does not know how to troubleshoot even though I have provided crash reports. I have sent my laptop in twice under warranty and both times returned with different issues. call reference numbers are ST62289 and ST61696. apple reference number: ********** 53869. I am frustrated beyond limit and i would like to know how is the istore/core is going to resolve this.