Surely your cashflow isn’t so tight that waiting 30 days for just £1k is going to cause such a massive problem?
But yes, PayPal is quite annoying to deal with sometimes. As you say, non existent customer service, and they’ll just hold money indefinitely if they feel like it, “pending review”.
They’ve become so big and dominant in the online payments market, they know they can do whatever they want and customers don’t have much choice but to put up with their rubbish service.