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I have used MyRig service repair for about 10 miners. I was skeptical at first sending my $5000 miner to a UPS box. So of course I called after I sent my S17+ in for the first time and luckily I talked to Billy. He spoke perfect English and definitely made me feel more comfortable about everything. They received it and it took about 2 weeks for them to get it back out. Now I have been sending all my garbage 17 series miners to get repaired. Myrig is definitely legit and has always responded to me in reasonable times. Also I would add that the antminer 17 series are terrible, don't buy any antminer 17 series!!
Who paid you to post this?

The last post about them was their email system was dead and not accepting any email.
That happens if:
1) they get overloaded with problems they can't fix
2) they really take no notice or care about their email
Aside: You only need to send broken miners to be repaired.