There is an option, there was some confusion, but it was decent of them to offer to fix it. But if you order from them just provide clear instruction and if you are confused like figure it out before you order :)
they have this one which is really helpful:
Shalwar /Trouser type: **we provide you opportunity to change the styles on any outfit. you can also ask for type of bottoms you want and outfit would be made accordingly. most of these donot cost extra unless extra fabric is required. **Regular Shalwar: this is normal shalwar with normal gathers. Patiala shalwar: this shalwar type has lot of gathers than normal shalwar and costs $3 to $8 (GB Pound 1.3 - GBPound 5) extra depending on shalwar fabric. Parellel pant: it is straight cut trouser. Churidar: it is skinny pant and has gathers at bottom and cost $3-$6 extra depending on fabric. Cropped pant: type of trouser few inches shorter than normal length trouser. Capri/caprice pant: shorter than cropped pant usually goes near the knee or at knee or a inch or two above knee. you can define the lengths of the bottoms in trouser/shalwar length option
I'm glad it turned out good for you, I got the replacement straight trousers I asked for from Indusmart recently so it turned out ok in the end. Great to hear a success story for a change!