Help, he doesn't care for our son

I fell in love with a man I met while I was at campus. I later found out he was a major in the army. He showered me with love and whatever I needed. Two years into our relationship, I got pregnant. When I told him, he told me to abort, saying he did not want to have another child since he has two others. He gave me sh100,000 for the abortion, but I did not do it. 

He was furious when he found out and he stopped calling me and sending me money. I thought with time he would change, but that never happened.

When I gave birth, he denied being the father of my son. My mother called him and they argued. He then sent me sh100,000 to clear the hospital bills. He has never sent any money for his son’s upkeep. I later proposed a DNA test. He told me to pay for it and that if the test proves he is his son, he would refund my money. However, I failed to raise the money for the DNA test. After some months, I threatened to report him to the Police for negligence and he encouraged me to go ahead. 

I told my father about this state of affairs and he gave me a job so I could take care of my son. 

When my son turned three, I called his father to see him. After many months, he eventually came to my workplace to see the boy. He did not carry anything for him, but he promised to send financial help later. He has never done so. 

Recently, he started calling me saying he wanted to meet me. I went thinking he wanted to talk about our son’s welfare. When I got there, he was suggesting we rekindle our relationship, but I turned him down, saying the only bond we share is our son and I do not want to get intimate with him again.

The boy is now four years old. At the start of the year, his father insisted the boy is young and so would go to school next year. Against his father’s wish, I took my boy to school. His father claimed he was broke so I should take care of the first-term’s school dues. I did so and requested him to pay sh60,000 for the uniform. He promised to clear the bill, but he never did so and I paid.

In second term when I called him to remind him about his promise to pay his son’s school fees, he told me he is sick and that he had not yet been paid his salary and told me to wait. His sister advised me that the only way he could take care of his son was if I abandoned him at his home, but I cannot do that.

He eventually accepted he was the father of my son, but has left all the responsibilities to me. He has not even introduced his son to his family. I know where he lives and one of his sisters, but I do not know his ancestral home. What should I do?

Twinomugisha