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HI @Iraaa__,
Welcome to the community. I am sorry to hear about the difficulty you're having with your C4.
Google Play Services should update automatically, but if they do not try using this link from a PC with your while signed in with your Google account. https://play.google.com/store/apps/details?id=com.google.android.gms&hl=en
If you are still not able to update it, I recommend you run a software repair using Xperia Companion.