Yes

I app**** for a cell phone contract in December 2020 and it was delivered to me on 5th of January 2021. I realized that the has a charging problem I called them within 7 days and explain my problem, the asked me to send the pictures of the phone via watsup, I did send them on the 14th of January 2021 the phone was collected from me since then they call me and update me about the phone. On the 26th of January 2021 I decided to send them a whatsapp and asked them about my phone it took them two days to reply my texts so they are saying they took the phone to maintenance I should for 21 days. My question is are they not supposed to send me a new phone what if that phone will give me a problem again. Please help me what must I do