Does anyone have an old t:slim that I can borrow?

My t:slim failed outside of warranty over the weekend. I have United Healthcare insurance and they will not cover a pump through tandem. Because of this, tandem wont send me a loaner while I try to get a new pump. I have 3 months supply of cartridges and infusion sets, but I just need a pump to borrow until I get this sorted out. Also, any advice on how to get a tandem pump through United Health care would be helpful.