"I will have to escalate this dispute to a formal complaint if I don't receive anything."
Here's a breakdown of the sentence:
* "Je vais devoir" means "I will have to"
* "transformer mon litige" means "escalate this dispute"
* "en reclamation" means "to a formal complaint"
* "si je ne recois rien" means "if I don't receive anything"
The speaker is expressing that they are becoming frustrated with the situation and are willing to take further action if they don't see any resolution.