IPhone X disgusted!!!

For the 3rd time now I have taken my IPhone X in!! First time-phone was blocked with a pin..2nd time- phone would not charge!! 3rd time- phone again would not charge!!! My contract was taken out in April 2018 not even 6 months and have hasles with this phone!! CLEARLY THERE IS A PROBLEM!!! I'M HIGHLY DISAPPOINTED!! First time with iPhone and extremely disappointed would not recommend it to anyone especially with the service I'm getting!!! Clearly there is a problem with this phone why cannot be replaced??? My husband and daughter both got them sane time too and all good on their side!! I am totally put off and would go back to SAMSUNG!! WHERE IS THE CUSTOMER SERVICE??? WE ARE GOING AWAY THIS FRIDAY AND WITH NO PHONE????VODACOM NOT I STORE HAVE BOTHERED GIVING A REPLACEMENT PHONE???