[PSTH.U]

Hi, I've tried to find this on IG. They have similar tickers but not this one. I contacted IG and they said they offer it. 
They have PSTH,K - which you can't buy.
And PSH.AS. That's currently $24.50
And PSH.PL which is 1886 and not available to trade. 

Did IG just get it wrong, and they don't offer it or am I being thick?

Thank you. 

[Quick commission question]

Hey, I just signed up today. Just 2 quick questions:
1. Are you refunded the £20 for the first two US trades in the first month if you make at least 3 trades? Or do you just have to stomach that in the first month?
2. Hypothetically, you can keep the trades free by just doing 3 £1 US trades a month right?

Thank you.