Pendle Truspeeds

Hi all, i have owned a 2 button trupeed now for over 12 months and had nothing but praise for the controller on how reliable it is and now that we have a club racing a few of the guys wanted ones too so about 2 months ago i went on Pendles website to buy some but they had nothing left in stock by the website, so i then fired off an email asking when they will be in stock again, within 24 hours i got a reply back saying that they were now back in stock so i then went and ordered 2 of them, a week later they arrived by post, and then when the next racemeet came around i gave them to the guys who paid for them and when they went to use them they just dont work which i found weird as even though we have changed from PB Pro to the new Advanced Powerbase the 2 older Trupeeds and the Parma converted 1 button Trupeeds i have work fine in both powerbases, so i went and dragged out the PB Pro and a stock 1.2ver 6 car powerbase aswell and the new conrollers dont work in any of the 3 powerbases which leads me to think that they are faulty, but the part that is starting to really annoy me is the fact that i have sent them around 8 emails since then trying to sort out the problem but out of all those emails they replied once asking was i using the new powerbase, which imo should not make a difference as they are a resistance controller so they should work fine on the new APB but it seems funny that they were quick to reply when i wanted to buy the controllers but now that there is something wrong with them they dont seem to be interested ( not real good customer service imo ), which is a shame as up until now i had nothing but praise for their controllers. I have not wanted to touch them as i didnt want to void any warrranty but now i am getting to the point where i am thinking that i have no option but to try and repair them myself, but i would like to know if anyone else on this forum is or had the same problem as me as i would like to fix them since Pendle doesnt seem interested

John