Recently my telecom has starting sending me regular texts (~3-6 months) "We've improved our service, you now have X more mb/month" "We've strengthened our infrastructure, your bill has been reduced from x/month to y/month, if you'd prefer more data you can reply with MOAR DATA to this text and we'll keep you at the same price and give you X more data."

Knowing that I'm continuing to upgrade while doing nothing increases my satisfaction and I haven't even shopped around since I switched to them.