Salespeople hate holidays. It's an excuse for decision makers to put buying decisions on hold. Two of the most hated phrases in sales. Call me after the holidays is not an objection. It's a stall.
Stalls are twice as bad as objections.
When you get a stall, you have to somehow dance around it, and then you still must find the real objection before you can proceed. Close on the stall line. Firm it up, whenever it is. If it's just a callback, make the prospect put it in his appointment calendar. Call backs must be appointed, or the other guy is never there when you call.