I've had other issues with them in the past, and I hate also how there's no real CS to talk to. They still are the biggest company in regards to having thier presence everywhere (especially PayPal checkout) and when something didn't work right by them I couldn't fix it, which really bothered me. But thru many different companies zelle is growing very quickly now, and hopefully since it's used by many large and important companies it'll have better service then PayPal.
And as usual the first company that becomes big in a new sector of business, thinks that being first is good enough and doesn't work hard to keep thier place, will die (Kodak, palm, blackberry... To name a few)