Unless they were serious problems - things that affected the safe operation of the unit, then going right to the top without going through channels first could be the worst thing you could do. Start with your dealer, allow them to make repairs as necessary. If that line of communication breaks down then suggest that they get the mfg involved. If that fails, then it is ok to call them directly.
Most all RVs are going to have some problems that will need to be resolved over the first few months of ownership. Some of us get lucky and the mfg and dealer did a good job of building and preping the unit and we never see them again.
Others get units that need to go back once or twice for minor fixes.
And some get units that are real lemons
If indeed your unit is one of these (I hope not) then going through the channels will help you if you ever have to use the Lemon Laws. Keep good records.
You might also post these problems that make you want to write the pres of the co.