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Next time it will be best if you use a much more secured wallet like blockchain or your local exchange if you have some so you can easily reach the customer service in case there is a problem in your wallet like this one.
Blockchain or a local exchange? Those are bad ideas unless you are incompetent about securing your own computer. Then you don't own bitcoin, you have an IOU.
Electrum is secure if your computer is secure. People saying that "they" have lots of security issues are misinformed.