I'm sorry for your loss, unfortunately a pretty bad choice for exchanging coins. Exchanging the privacy-oriented XMR coin on the KYC exchange is always a bad idea.
You may ask, why on earth did you go to imexchanger.pro instead of poloniex, for instance?
We would ask you why you didn't use exch.cx, which is no-KYC, and you would have seen that they enjoy a fairly high reputation on this forum and outside of the forum as well.
I would really appreciate help or advice on how to get my money back?
Is this your case:
https://www.bestchange.com/imexchanger-exchanger.html?review=2808789First of all, it wasn't Bestchange that closed your review, it was Imexchanger. Yes, it is possible, but it is a huge failure of the Bestchage platform, which they are also aware of.
They
Imexchanger's replied that the funds were frozen by the exchange, which can only mean one thing. Imexchanger has a 3rd party liquidity provider and they have no access to the funds, only their partner. What you have to do is find out who their liquidity partner is and continue communicating directly with them.
I would say it's Whitebit, and that's the right address for complaints.
From their TOS:
When calculating the order, the exchange rates of WhiteBIT or Binance are used.
Otherwise, good luck with the process, Whitebit enjoys a rather bad reputation and there are many accusations against them for similar cases of taking users' money.