Carr's initial treatment was successful but he started to feel unwell again nine months ago.
The response to requests for follow-up scans was that his symptoms were normal.
At the start of this year, Carr discovered a lump in his tongue, something initially misdiagnosed as a blocked salivary gland and nothing to worry about — a misapprehension which took three weeks to rectify.
Once the lump was classified as suspected cancer, waiting lists and delays bedevilled Carr.
A planned MRI scan never happened, and would now be of no therapeutic use.
Carr went to hospital for a booked CT scan only to be told that his appointment had already been cancelled — a letter to tell him arrived two days later.
"To be fair, I got to see a head and neck specialist within a day or two and they took a biopsy ... at that point they said I probably had a 10 per cent to 15 per cent chance of survival.
"They said with palliative care they could extend your life, they could maybe give you some radiation or chemotherapy to slow it down and maybe shrink the tumour back, and I thought, if that's the way I'm going to go, let's take every chance before I have to go."
Carr was also able to get a PET scan authorised, a procedure for which the SDHB sends a limited number of patients to Christchurch.
That revealed Carr's cancer had spread throughout his tongue and neck.
"They didn't really go into my survival chances at that point but if it was 10 per cent to 15 per cent before, I knew it was going to be less," Carr said.
"They said, we will refer you to palliative care ... I had already taken the hit from the shock the first time around so that wasn't so bad."
After not hearing anything from Otago Community Hospice, he contacted it, only to discover his referral had not been received.
Carr has since had a first appointment with OCH, and has had some DHB-funded grief counselling sessions.
"I also found out that the waiting list for palliative oncology is something like seven weeks, not that anyone has told me this officially.
"There are something like 27 people in front of me in the queue apparently, but no one has actually formally told me that.
"I haven't had a 'we're so sorry this is happening to you' — all I've got is a possible treatment date which is maybe a week out from my initial 'this is how long you are going to live' date.
"To me, the system is complete bull... ."
Carr's son has lodged a complaint with the SDHB over his father's case.
His daughter, who lives in Finland, is unable to make it home to be with her father.
Carr is now trying to sell his two taxis and make arrangements to provide for his wife, Jo.
Friends have started a Givealittle page to try to help.
"On March 19, I was told I had two months left, without treatment, and when I had that scan I was already three weeks into that time, so I now have very little hope of any treatment of any sort," Carr said.
"I hope that other people are able to avoid the devastating wall of silence that we have had."
