Anyone else experience this dichotomy between local and online experts?

Cali Cat you have explained why TMobile does not accept responsibilty for salespeople at the TMobile store 

Seems a really disgusting method of business.  Quite the contrary, with ATT the store retail associate spoke with corporate customer service for me, thus helping me immensely.   So very distraught about my new TMobile account that I fear TMobile will raise my bill.  I have been told  by corporate TMobile  that even though the deal the sales person sold me is not honored by TMobile I find myself locked in for two years.   My fear is that TMobile will find another way to charge me even more for what I do not even want from TMobile