In another context, you may well have had a legitimate point about Samsung's poor customer service.
As the first reply to a story about how 70 people have died from (and 200 diagnosed with) cancer, it comes across as borderline insensitive and a self-centred excuse to moan about your smartphone.
Ironically, this not only detracts from a (possibly) valid criticism of Samsung on your part, but it's also quite likely to distract from the fact that Samsung are to blame for the deaths mentioned in the story as anger is abruptly refocused towards the insensitivity of some pillock whining about his bloody smartphone!
In short- counterproductive on both counts. There's a time and a place for everything.