"Postponed dental surgery"

My partner was referred to Monklands Dental dept in 2015. They carried out various tests and scheduled his surgery for Jan 2016. The day before, they cancelled the operation as they needed to carry out more tests. He was back and forth to Glasgow Royal and Monklands. We were then told he was on the waiting list. 2019, I came home to my partner in tears as he was in so much pain. He never complains but had called the dental depot to see what was happening. He was told abruptly by the secretary, they had no record of his test results and they would need redone. I immediately called and spoke to the secretary.   Her attitude was appalling. I immediately phoned the complaints manager. She has been the only one, who has listened to the issues, we have faced. Then lock down started. Today, May 2021 we received a letter stating there is a big backlog and they are not sure when they can schedule the surgery. We are more than aware of the problems the pandemic have caused the NHS etc....however it has been six years, since my partner was initially referred to Monklands Dept. To say I am absolutely disgusted is an understatement.