hhhhmmmmm Tracee I had one problem with Ace the whole time I used them and they fixed it right up (it was their fault) and sent it out to me the next day. Sorry to hear you had problems, but glad you found someone who you can use now.
They did that with me also on my order before the last one, they used too much ink and the words smushed out and the were not legible. They sent me out an order for free, which was great, but I missed my time line and made everyone mad at me. I also lost 4 shirts in the process. Was costly. So I was good with it, then the next order I couldn't get to stay on when I peeled it "cold" the lettering came off too. I tried everything, more pressure, more heat, less heat, waiting longer, waiting shorter. I sent them a sample back and they said they didn't see anything wrong with it so IDK, but I was embarrassed giving that order to the customer. And this was all after I had already had trouble a year ago and quit using them. But like you said, I did find someone I like, they are more expensive though.
It's like this with every supplier though, some people have trouble some people don't. Think about SWH, I have read post after post about them being horrible, and then post after post about how they are great and some people have no trouble LOL. It's all in the luck of the draw I think