Pathetic service from Standard Bank Credit Life Insurance

I've been trying to cancel a policy for the past 3 weeks to avail. When I get through to a consultant via telephone I'm advised I have to email a request. However, my emails are not being attended to. I emailed on the 9th February, 15th February and again today (22nd February). I understand everybody is under immense pressure, but 3 weeks is unacceptable especially when they request a 31 day notice period, which I hope will be considered as the 9th.