Try and scan your computer with malwarebyte. This thing has happened to me before in the past. I tried to purchase airtime using btc on bitrefill and I discovered that the address generated is different when I pasted it. Luckily for me, I have this attitude of double checking an address anytime I'm making transaction before completing it. Sorry for your lost
Ohhhh damn man, it already happened with you
tbh i thought that i was the only one