UKC

Can you hire climbing gear in porta Pollensa and what’s the best way to get to la creveta from there if you don’t drive? 

No idea about gear hire, but Google maps says it's only 5km so I imagine a taxi up the hill and a walk back down would be cheap enough, and a walk/bike up the hill wouldn't take too long.

Nowhere in Puerto Pollenca for climbing gear hire.

Can however hire a bike there which will get you to Creveta quickly if you dont mind a pretty steep hill climb.

There is a bus service in season that stops at the big parking at the top. The route is so popular with people heading out to Formentor I would imagine you could thumb a lift up from Pollensa. You could also rent an e-bike. I don't know of any rental shops, we've always taken our own gear. 

A quick Google suggests you might get gear hire too.

https://mondaventura.com/activities-adventure-mallorca-pollensa/rental-equi...

I'm amazed that you can hire ropes, even at that price