I went to one of the Metro PCS Corporate stores to pay my phone bill. The lines are usually long and on a previous visit, the customer service rep suggested I use "their" Automated Payment Center located right out front. So the last 2 months I used the machine. You do not have to have exact change. My bill is $52, I put in $60 and receive $8 change and a receipt verifying my transaction. Last night (Dec 1st), I used their "ATM". I put in a $100 bill. It processed my $52 payment and said to collect my $48 change. Their was no... read full review »