I totally agree that testking is a bull$#*! and scum. Not only they are most expensive among other testing companies, but they also sell you $#*!ty product full of technical mistakes, grammar and English syntax errors as well.
They dont refund, they are cheaters! There are so many others who offers the same but with higher quality, dont give money to these cheaters!
I had sent them around 20 evidences that aswers are wrong, next version they released had still same mistakes!
I've sent tham mail with unconvienient quetions, like who is validating answers before releasing to customer or why you are claiming you have 24/7 support whily you dont have but they didnt replied.
Stay away from them if you dont want to waste your time.