Truworths - calls and smses without consent

Firstly, Truworths phones you several consequential times if you do not answer. Not taking into consideration that the person they are trying to contact may be in a meeting (which I was). When I declined the phone call they simply phoned again within a few minutes. Secondly, when I eventually answered the phone I told the lady who was very displeased with me at the time that I am not interested in their very special offer / store card / credit card. This means that I am not interested now, or ever, and do not wish to be contacted again in the future for any credit offers. Especially not less than a month after being contacted. Today I received, once again, a SMS with an invitation to apply for store credit, addressing me by my name and surname. I would also like to know where they got my contact information from?

I asked Truworths via Facebook messenger a while ago to please remove my number from their database, but they could only do this if I gave them some details (my birth date etc) which I do not feel comfortable to share. I never shared this information with Truworths in the past, ever. I only ask that you search for my number and DELETE it from your system. I do not give you consent to cold call me anymore, which should have been implemented by my first "no thank you".