My phone was stolen

Hi guys.
I recently had my Huawei phone stolen at my workplace in Ghana.
Asked everyone and everybody claim not to know about the phone.
We have about 600 - 700 guys on site.
I have the IMEI numbers of the phone with me but the phone lines are off.
Wondering if anyone can assist me with anyway of locating/blocking the phone with the IMEI number.
Thank a lot and looking forward to ur best response as always.