There is no tech support for Electrum this section is the right place to seek help with Electrum. Or if you have some issues or bugs you can report them from their GitHub check the link below
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https://github.com/spesmilo/electrum/issuesBut you can not report your issue there because you were hacked or have a compromised wallet.
What I guess is that you are being phished or your PC is compromised would you mind telling us what 3rd party you mention above?