Awful Company and Ineffective Customer Service

I ordered two P72 mobile workstations in mid-December. A few days later, Lenovo cancelled the orders claiming the units were out of stock and that they would not be shipping anything or charging me. A week later (after I had placed an order for two slightly different P72 models), they shipped the two original units from the order they cancelled and charged my credit card. I refused them when they arrived since they were now duplicates. They received both units on 1/4 refunded one unit on 1/27. Since then, I have been chasing them around for the refund on the second unit. They’ve now owed me more than $1,700 for more than two months and I’ve been paying the credit card interest, despite eight or nine lengthy phone calls. They may make great computers, but their organization is really screwed up. Once they make a blunder, they don’t seem to be able to fix it. Now I’m promised a refund by the end of March, a full three months after they received the returned units from an order they cancelled that they were never supposed to have shipped in the first place.