Legal question about being fired/let go recently. HELP please!

So I was working for a company for approximately 1 year and 3 months and I decided to transfer to their partner company because I wasn't getting enough hours. After transferring I decided I wanted to go back after about a month of working there I gave my employer a 2 weeks notice, she had me scheduled past the 2 weeks and I told her I am not working past the two weeks.

I recently got a phone call saying my transfer back will not be accepted because I didn't finish the schedule even though it was past the 2 weeks notice. She told me to re apply in 6 months and then told me bye.

Do I have anything to go off here or am I just over reacting. I am in Pennsylvania by the way. Thanks in advance.