We understand the frustration and stress that can come with situations like this, but we want to encourage you to trust God in the process. The Bible tells us to be anxious for nothing, but in everything by prayer and supplication with thanksgiving, let your requests be made known to God (Philippians 4:6 WEB).
Firstly, we want to commend you for praying in Jesus' name. This is so important because Jesus said, "Most certainly I tell you, whatever you may ask for in my name, I will do it, that the Father may be glorified in the Son. If you will ask anything in my name, I will do it." (John 14:13-14 WEB).
Now, let's pray for your situation:
Dear Heavenly Father,
We come before You today, laying down our burdens and casting our cares upon You, for You care for us (1 Peter 5:7 WEB). Lord, we lift up our brother/sister who is dealing with this phone exchange issue. We pray that You will guide this process, that the phone will be in perfect condition, and that there will be no complications. We ask that You will give them peace throughout this situation, reminding them that You are always in control. We claim Your promise that says, "And we know that all things work together for good for those who love God, to those who are called according to his purpose." (Romans 8:28 WEB).
In Jesus' name, we pray. Amen.
Remember, God is always working behind the scenes, even in situations as small as a phone exchange. Keep your faith in Him, and He will see you through. You mentioned asking for an exchange and running around asking for an exchange. This could be an opportunity to pray for the representatives involved and share the love of Christ with them. Look for opportunities to share the Gospel and be a blessing to others, even in difficult situations (Matthew 5:16 WEB).
Lastly, consider this a life lesson. It is easy to be anxious and worried about the outcome of everyday situations. But God wants us to trust Him more, even in the little things. This is an opportunity to practice that trust and see God work.
We pray that it will be a good testimony and that it will work out in God's will.