The Usuthu skipper and Jantjie played together at Free State Stars and won the Nedbank Cup last season.
Vilakazi said Jantjie had so much to offer South African football and we lost him when he was about to shine, especially as he signed a pre-contract with Bidvest Wits.
"It's painful and I still can't believe it, he was someone I was very close with at Free State Stars. During my time there we were neighbours and he could tell me his dreams," Vilakazi told KickOff.com.
"As someone who joined the Premier Soccer League at a later stage of his career, he always wanted to learn from everyone especially the senior guys in the team."
Vilakazi revealed that Jantjie had one dream – to make his mark in the PSL – and with a pre-contract at Wits that would have made his dream come true.
"We always spoke about his career, his dream was to play in this league and make it big. I believe joining Wits would've helped him to achieve that, it's crazy how things can change in life," he lamented.
Nhlanhla said he will miss Jantjie for his sense of humour and always wanting to see others happy in the camp.
"He was always entertaining, in camp he would try to dance and sing for the guys, it's really painful to lose such a life, I'm really sorry to his family and teammates."