Please change communication preference to email only

I requested my policy be cancelled but i havent revieved my calleation letter as of yet, i think you guys have been calling me about that but i dont understand why i cant just be emailed? Please stop calling me- I understand that it's about my policy cancellation but I can't afford to take calls of that nature at work. I work in Healthcare where I need to answer calls incase they pertain to work andnit gets very frustrating having my cell ring everyday more than once a day and seeing truecaller showing Dotsure is calling. Please liase with me via email and I will respond as soon as I can.