Tim Hortons review: Coffee

I stop at Tim Horton's every day and it is getting worse and worse. I order an XL triple triple and if I am being honesy, I should be paying for a barely large because every other day my cup is not filled up (it's no where near the fill line) it literally changes the taste of the coffee. I have complained so much that you would think that they would recognize my face and make sure my order was correct. I have emailed and called and nothing has changed.