I am looking for someone to regularly feed my cat

I doubt whether many Italians would regularly feed a neighbours cat - they seem to have a different view on cats to Brits, in most cases.

You could try the expat forum(s) for your area - you might get an offer of help.

Good luck

try asking this real estate agent, he knows many foreigners who have a house in Cisternino, maybe someone is there

info@realestatecisternino.com

How long will you be gone? I live in Rome. You could drop him off here if it's only a few months.