Can I be sued for a job remodel job I did in Pennsylvania if I live in ny? And if so don't they have to sue me in my county and not in PA where I did

I did a 2.5 month custom bathroom job in Pennsylvania. I didn't recieve any payment towards it and it was a verbal contract. The customers loved my work up until 2 days before I was going to be done with the job. They called me when I left the job on a Wednesday amd told me they were leaving town until Monday so not to come back until then. Sunday evening they sent me a letter of termination stating not to return to there property. They accused me of stealing a bucket of mastic. I didn't even use mastic on the job so there wasn't any even there. I sent them bills and no response. A month went by and I sent them an intent to put a mechanics lien on their house. I them recieved paperwork about 2 weeks later from there lawyer stating they were suing me for breach of contract for not finishing the job. They also changed there story about stealing a bucket of mastic to I stole 10 boxes of tike. And that I placed a dumpster on there property and never paid for it so they had to. To be cont.