One stop travel and insurance antics

Am convinced One Stop intentionally misled me by only informing me a few days before departiure that I needed to go online and purchase compulsory travel insurance for Doha travel. I had already purchased their R900 general policy through Linkam when i booked months earlier. Had they informed me timeousky I would have not purchased this Voluntary R900 policy. Ended up spending about R3000 on insurance as a result. It's possible one stop receives a kick back from linkam insurance and I was therefore informed of the comulsory insurance few days before travel. A *******.