I’m always suspicious of claims of contaminated gas, mostly because of what Caddyman mentions-- if a gas pump has been dispensing bad gas all day long, it’s not like it’s just going to cause problems in one or two cars. It’s a pretty big deal when there actually is a pump dispensing bad gas-- it’ll usually be in the paper or on the news. And most gas stations will have insurance for just such an occurrence and so the stations themselves are pretty good about fixing people’s cars when these things happen.
I’d also be very interested in the diagnostic process that lead to a: that it was bad gas and b: that the injectors needed cleaning, fuel pump replacing, etc. With most gas contamination, you drain and refll the gas tank, change the fuel filter (that’s what it’s there for, after all!) and away you go.