Is this true? Can we confirm this with someone who uses it? I haven't tried this Trustwallet yet so I have no idea they don't have that type of feature.
If that is the case then it's not Bitcoin blockchain that you should blame but the wallet itself.
Perhaps it was set at the lowest rate while they are charging you with higher amounts. What you could do is change the type of software wallet that you are using with options to speed up the transaction. Like Electrum, Mycellium, and more.
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