Discovery Life doesn't honor quotes

Our financial advisor advised us to upgrade our Discovery Life Insurance. We went through a process of looking at various options. Discovery had a special offer that we wished to take up before the expiry on the 26th June. We met our financial advisor on the morning of the 26th who got in touch with Discovery to give us a new quote. Discovery generated a quote to our financial advisor on the phone, we accepted, he adjusted the quote manually and we signed on the dotted line (this he assured us was entirely possible, the entire conversation was recorded by Discovery on the phone). Done and dusted. Well, not so! Discovery later phoned to say they had made an error and for the same cover it would cost us more. This was the 3rd error they had made in the quoting process. We argued that they should listen to the recording and should honor the quote. They refused and simply offered to reduce our cover for the same price.They seem to be more concerned about making money than about their client's financial wellbeing, the very product they are selling. Is this how Discovery Life operates? Generating erroneous quotes 3 times in a row and then not honoring them? It's a shoddy business