I work for Verizon Wireless...and folks in Telesales do make hella money, but it's super hard to get in there, because they will hire internally mostly to fill positions. And you do have a qouta to fulfill...I work in customer care, so I get no commision, just people yell at me all day...
As for the stores, I'm not really sure...I believe the hourly is decent, not as good as customer care, but you can make some money in commissions...