I read somewhere that most Portuguese banks still make you show up in person for the first account, something about the ID rules. Activobank is the one people keep bringing up for doing it all online. Might be worth a look before you deal with that phone window again.

My old boss swore cheap ones worked fine until a $22 set cost us a $400 part too.

First trip to Bangkok my Osprey zip went at the airport and I had a roll of duct tape plus a shoelace holding it together for 11 days. The tape held fine but the zipper pull was gone so I had to fish the teeth out with a key every time I opened it, which was a pain. What saved me was a cheap luggage strap I bought at a night market for like 3 bucks, wrapped it around the whole bag and it took all the pressure off the zipper. Carabiners are smart too, I keep two on the outside now and clip the pulls together so nothing can slide open. I'd fix over replace any day though, a 12 euro stitch job beats losing all your stuff to a cheap bag that dies in two months.