Chamet Account Lost Access and Diamonds After Phone Change

I have been using my Chamet account for many months without any problems, but today I suddenly lost access to it. My old Chamet ID is 7444737*** and I was using this account on an Android phone. Now I cannot log in to this old account at all; the application simply does not open my account. Before this problem started, I logged in on another device through my diamond seller. My original login phone number for this account is 03130561***. My diamond seller opened my ID on his device and added his own number to it. After this change, I completely lost access to my account. On this account I had approximately 49,000 diamonds, and now I cannot reach them because I cannot enter the account anymore. I request that my old Chamet account be recovered for me, that my own phone number be restored as the number linked to the account, and that my 49,000 diamonds be returned and kept safe. I kindly ask for this issue to be investigated urgently and for my access to both the account and the diamonds to be given back to me.