Unrequested Third-Party Contact After Quote Request

I contacted Outsurance to request a quote for an item to be insured. I asked to be called back within five minutes and stated that my details were not to be shared and that I did not consent to follow-up contact. After the request, I received calls. These calls were not from Outsurance but from Kind Price, a company I do not wish to engage with. This indicates that my contact details were passed on, either directly or indirectly. This raises concerns about how customer information is handled.