My parcel has not been delivered to my client

<p>Is been # weeks now i mailed a parcel to a client who paid for services.as i speak to you is on transit in wistpo hub for 3 weeks now.i need you to help me on this matter becauses my client want his money back.can you help me on this matter here are the tracking deatils RC ********** 08ZA and RC ********** 34ZA plz guys can you help</p>