PESO BUFFET & TALA PERA

Hi guys. Please help me how to handle my situation. I have a loan and due na siya, bago mag due babayaran ko naman kaso hindi ko ma-download yung app kasi wala na sa app store. It turns out madami na nag report sakanila kaya nawala sila. So may mga ng ha-harrass na sakin sa gmail pero I can't just pay them kasi baka mamaya sabihin sakin hindi naman sila/kanila yun bakit ko babayaran so ma doble pa yung babayaran ko. Help me please if this is a legit account of them to pay. Thank you so much guys