I am writing Tim Hortons to let you know that I am no longer going to purchase any of your products

I am writing Tim Hortons to let you know that I am no longer going to purchase any of your products. Over the past several years, I have gone to your restaurants (in Canada) less and less. Your staff are rude far more often than they are polite. It also seems to me that the quality of the food has declined, while the prices have risen. Those reasons would be enough for me to stop going, but on top of that, your use of foreign workers reflects a disinterest in worker's rights. So I will no longer go into your restaurants or purchase your products.