Christopher Hodgkinson - partner of Natasha Harris whose death in 2010 was linked to excessive coca-cola consumption - has been making ''angry'' calls to the company. He is pictured here giving evidence at Harris' coroner's inquest in 2012.

Coca-Cola staff in Invercargill are understood to be on alert after angry phone calls were made to the company by a man whose partner's death was linked to excessive coke consumption in 2010.

Christopher Hodgkinson, the partner of 30-year-old Natasha Harris who drank up to 8 litres of coke a day for several years before she died in 2010, said he made several calls to the company one day last week.

Hodgkinson blames Coca-Cola for his partner's death, and said he had asked the company to help him get his eight children back in the phone calls.

FROM THE ARCHIVES:

* Coca-Cola addiction linked to death

* Woman drank up to eight litres of Coke a day

He had been living with Harris and their children prior to her death but lost custody in the months afterwards, he said.

He had been given the "royal run around " by Coca-Cola on the phone and had been angry, but had not threatened anyone in the calls, he said.

It is understood the fizzy drink giant has subsequently sent photos of Hodgkinson to its southern staff so they know what he looks like and can keep alert.

A Coca-Cola spokesman said the company was absolutely committed to keeping its people safe and would implement whatever measures were necessary to protect its people.

"Regarding the specifics of your inquiry, we will be making no further comment."

When police were asked if Coca-Cola had lodged a complaint about Hodgkinson, a spokesman said: "Police are aware of allegations that threatening phone calls were recently made to a group of people in a call centre. Police are making inquiries into the matter."

The incident comes four years after Hodgkinson rebutted Coca-Cola claims he had made death threats against its Invercargill staff.

In 2011, Coca-Cola Amatil New Zealand managing director George Adams said the company had employed a security firm to shadow its Invercargill staff after a threat was made against them.

Staff had also been asked to wear plain-clothes to work and were travelling in unmarked vehicles.

At that time, Hodgkinson said he had called Coca-Cola and got "anti" at them several times but had never made threats.

The problem was not staff but the product, he said in 2011.

In 2013, Otago-Southland Coroner David Crerar linked Harris' high coke consumption to her death.

"I find that, when all of the available evidence is considered, were it not for the consumption of very large quantities of Coke by Natasha Harris, it is unlikely that she would have died when she died and how she died," the coroner found.

Coca-Cola argued the huge quantities of Coke she drank could not be proven to have contributed to her death.

Hodgkinson said on Thursday he had "let things lie for a while", before contacting Coca-Cola again last week.

He rang the company in Auckland multiple times in one day asking to help him get his kids back, he said.

His life has been rocky since his partner died in 2010.

He had been involved in an incident which resulted in him doing jail time for a home invasion offence before being released in October, he said.

"I have done a few years' jail and had a lot of deep s ... to deal with over the death of my partner. I have lost all my kids. I am trying to get back on my feet."

Assistance from Coca-Cola would allow him to get into a big house which he believed would help him get his kids back.

"I have nothing and the company is still out there making money from a product that has devastated the lives of us nine."