Harassment telephonically up to 30 times per day

Between yesterday and today I received random calls to my cellphone and once on my landline at work asking for my ID No. I asked them what it was about then they put the phone down. My cell number is ********** . I am an existing client of Sanlam, so please check against my cell number. I REFUSE to give out my private information telephonically without being informed what the call is about. PLEASE DESIST FROM CALLING ME. I REPEAT PLEASE DO NOT CALL ME. I previously had a policy with Sanlam which they allowed (conveniently) to lapse without informing me then when I asked how I could rectify immediately they gave me the amount of R1 700 which I paid immediately. The next month I was informed that I needed to pay a further R5 500 to re-active the policy. Totally unacceptable being fed lies and being misled. I refuse to have any further dealings therefore with Sanlam. Once my loan is paid up I will be done. No more Sanlam. Goodbye