Mobile Phone Companies....
No matter for what reason you have to contact them you immediately get an email or text asking "based solely on your recent contact with us, how likely are you to recommend/use us as a supplier" type thing.
You wanna know something? It takes a lot more than one fecking contact with you to make me decide something, maybe, just maybe, reliability of network, coverage, price, corporate attitude, etc., might just come into it. And the fact you just spammed me almost certainly counts against you.