Clint Behm Deceptive Sale Practices/Breach of Contract Powder Springs, Georgia

I saw a banjo for sale at the craigslist website for $20.
I contacted the seller and informed him that I would like to buy it.
He responded back and wrote that he was informed that it was worth much more money,and that he was increasing the price to $100.I wrote back that I would still like to buy his banjo at the higher price.He asked me when I could come and get it and I replied either immediately or first thing in the morning.He wrote back that I could come pick it up at 8:30 in the morning at his home at 3654 Homewood Tr. Powder Springs,Ga.30127.He told me I could pay his brother,who would be at home.
I wrote that I would be there.
Less than 30 minutes later I received a text message on my phone,telling me to check my email before I left home in the morning.
I received an email from Clint,reneging on our agreement.He said he was raising the price again,to $375.I informed him that that was a breach of contract,and that I could take him to court over the matter.He then accused me of harassing him and threatening him and that I could do whatever I wanted,he wouldn't sell it to me.
Do not enter into any agreement or contract with Clint Behm.His word is worthless.He has no integrity.