Not happy with response from Budget

I took out insurance with Budget on 10 Feb 2022 and was very happy with consultant etc etc. However, on reviewing costs decided I wouldn't afford and cancelled the policy on the 11th Feb. (Copying Sales). On 15th not hearing from Budget I sent Email advising I know disappointed but shouldn't burn their bridges, should at least acknowledge my cancelation. I then phoned, only for support to advise I should have contacted Cancelations not Sales and Consultant. My question is why didn't Sales or Consultant advise Cancelation department - it was after all, only about 24 hours later. And by the way, Budget don't have a cancelation email you have to phone in. I phoned them and despite explaining the whole saga, the cancelation letter I received states I advised them of cancelation on 15th, today, when I was clear that they could check with Sales, I canceled 11 Feb. And also, lettrr doesn't state policy canceled with immediate effect, letter says canceled wef 25th. Why? I don't like that at all.