The HR21 might have a slightly bigger hd but not enough to be noticeable in regular use. (some hr20s had 300gb hds, all hr21s have 320s). Any time a tech swaps a receiver they should take the old one with them so no idea what this tech was thinking. Theoretically if DirecTV is expecting a receiver back then you would get charged a non return fee eventually which is several hundred bucks.
At this point I honestly have no idea if DirecTV is actually expecting you to return that hr20 or not or if the tech is just going to end up short on his inventory because he screwed up.
At this point I honestly have no idea if DirecTV is actually expecting you to return that hr20 or not or if the tech is just going to end up short on his inventory because he screwed up.