In the past 3 weeks UPS has lost 3 possibly 4 of my shipments... including a razor that I had shipped out as a replacement for the first one they "misplaced"

I was cool about it at first, They were only Wapis... right?
and I had them insured.

Unfortunately the one they lost today wasn't a Wapi...
It was a mirror polished 8/8 W&B Wedge with Amboyna burl scales .
I was sending to a member here as a thank you for doing some custom work for me.
The good news is this member doesn't know who he is, or that he is missing out on this nice thank you gift... So he isn't stressed out and royally PO'd at UPS.

I'm at an absolute loss for what to do, They have literally lost 10% of the packages I've sent with them in the last month, 2 have been located, but only one has actually been delivered... 6 days late...

They charged me twice for one of the packages they lost, a package I had to send to replace another package they lost...

They have insinuated several times that I didn't send a package, or that a return package wasn't sent by a customer of mine only to find the package the very next day... and their supposed refunds and/or insurance has accounted for absolutely nothing as of yet. I'm still trying to get a shipping refund for the first package that they were supposed to deliver on the 18th of last month.

I'm not sure what to do, I don't trust the US post office either, and I've been very lucky the packages weren't razors I was honing for members.
That's just what I need, to have UPS lose some member's great grandfather's TI or something.

Has anybody else had similar problems, and how can I resolve this?
Talking to UPS is not getting me anywhere, it's like talking to a wall.