Schwinn Amalgam Electric Bike, 7 Speed

Ive have 2 Amalgams for a year, and one of them constantly squeals when the brakes are in use, no matter how many tune ups or change outs Ive done - the other doesnt even work.Not only does the eBike part not work, it gets HARDER to bike uphill - and when I say this, I don't mean "pedaling uphill takes more strength," I mean "its twice as hard as it should be to go up hill even for a non-electric bike."I really feel like I was scammed out of almost $3000 on these two bikes, especially since they dont have throttle options like practically every other ebike on the market.