UK-based lawyer to watch and follow up investment.

¡Hola! I'm seeking a UK-based lawyer to watch and follow up on my investment. I need him/her to introduce himself to the investment platform as my lawyer and follow up on my requests of selling part of the investment, where they are not currently diligent. Even though I consider the investment platform not a scam, I need some reinforcement in my communications with it. They are not taking my request seriously and are acting with poor customer support, even considering that I made a big investment.