Furious client

In November I made changes to my life cover. I requested my premium to be a fixed premium because I cannot afford the annual increase anymore and asked them to take my benefit to the original benefit that I opted for when I 1st took the policy. My financial advisor was assisting me and the changes were made. End of November they deducted the new premium, which was the fixed premium. In December I received an anniversary letter from from Discovery stating that my premium will be increasing. I forwarded the letter to my financial advisor and there was no response. On the 11th of December I called their offices and spoke to Percy who advised that they are not sure why I'm receiving an anniversary letter, they investigate and will get back to me within 72 hours. Instead of getting feedback I kept on getting emails informing me that they are still busy with my query. This is from the 18th of December till today. What ****es me off is the fact that in December they debited a new premium which is the one on the anniversary letter not the one we agreed on. I feel disrespected and undermined. I rejected another life cover because I thought Discovery was good but instead I am getting a horrible service. They want to drag this until I give up, that won't happen.