The first time they were nice and kind of honest. ...

The first time they were nice and kind of honest. They only increased the weigh of the package. I thought it was a small mistake and I didn't care.
But the second time they greatly increased the weigh and use a way more expensive shipping option without asking me. I had the cheapest shipping option. They made me pay more than double!!! This is absolutely not honest!
I'm reporting this business as a scam!