You took the right decision about a full service as, after 10 years, your timepiece needed, at least, new oils. Now, it is ok for the next 7 to 10 years.
Regarding the little dust, if you know a good watchmaker around you, he could help you as it is just a little problem that he could quickly solved.
About the polishing of your timepiece, unfortunately you cannot go back. Next time you will send it for a new service, just indicate that you don't want a polishing.
I wish you to keep it for a long time.
Best wishes
Alkiro