However the Napier resident wants the justice system to change so Savage, and other foreigners charged in New Zealand face their sentences before leaving the country.
The man - who suffers from several health issues - said his health was "going downhill very quickly" since his involvement with Savage.
He had been told by Savage, a former Queensland Police officer, that his diabetes could be cured.
Savage convinced the man to stop his prescribed insulin injections and start an alternative programme - which included feeding him magnesium and ultimately injecting him.
The man's health deteriorated without his prescribed insulin, and he was hospitalised after a second intravenous treatment.
In May Savage was arrested while attempting to leave the country. In November he pleaded guilty to criminal nuisance, and was fined. His passport was returned to him.
After leaving the country that month, Savage was reported to have posted "escaped NZ without paying the stupid fine" on social media.
The reparation fine comprised $600 to the victim, and emotional harm reparation of $1000 - of which the Napier resident said he had received "nothing".
He had accrued health costs, which the money owed could have helped with. He also said he was having trouble receiving financial support from ACC due to the incident.
"My health is just deteriorating very rapidly, I'm losing weight I believe ever since the magnesium was injected into me, it's deteriorating my body," he said. "It's putting a lot of health strain on me".
The man said he felt "let down" by New Zealand's justice system, and thought harsher restrictions were needed.
"A fine to them [criminals] means nothing, they get out of the country and they don't worry about paying it...they can escape laughing out of New Zealand and then all they have to do is not come back," he said.
"I'm not the only victim, there could be others out there. The court system has let us totally down and all these criminals are getting away with it too much."
Enforcement action cannot be taken until a fine is overdue after 28 days.
A Ministry of Justice spokesman said if a person owing fines left the country, they could be contacted, and payment requested.
"Some people pay, but others do not," he said. "We cannot take any enforcement action on a fine where the person owing it is not in New Zealand."
A warrant to arrest can be issued because of an unpaid fine. If a person has a warrant and is stopped entering, or leaving the country they will be asked for payment, or can be arrested.
A Sensible Sentencing Trust spokesman said they were lobbying for changes similar to what the man wanted.
He said any visitor to the country who committed an offence should be held accountable, "and should under no circumstances be allowed to leave New Zealand until all sentences or punishments and fines or reparation has been adhered to".
"This offending could have put some ones life at risk and yet it is the victim that ends up paying the price."
He said the trust would be lobbying for legislation change to make it mandatory for passport surrender for any overseas national who commits an offence.
"And also that they will not be allowed to leave New Zealand until all fines and reparation has been paid in full".
The Ministry of Justice spokesperson said they were "committed to ensuring that fines remain a credible sanction and our fines and reparation enforcement system is comprehensive".
He was unable to answer whether any of Savage's fines had been paid to date.
Savage did not respond to requests for comment yesterday.
Last year a Chinese woman who caused the death of Rhys Middleton, 23, in a 2016 Waitangi weekend crash left New Zealand without serving her sentence.
In June she was sentenced to 17 months in jail, but in August her appeal to reduce the sentence was successful and she was given the lesser sentence of nine months' home detention and 150 hours' community work.
The same day her sentence was reduced, Immigration New Zealand served Xiao a deportation order.
