Stay away from oppo A15 mobile cellphone

Ever since I bought this phone it's been giving me problems, when I get a call the phone will just ring but do not show the number on screen and the space gets finished quickly because u have to download all the apps and the front camera is a nightmare, when time goes by the apps store won't work at all u won't be able to download any apps. I'm really disappointed. I've had this phone for only 2 months but I don't want it anymore it's not helpful at all