My gut- they are trying to sell you something else.
I financed part of my fiancee's ring through Well Fargo; same reason- 6 months do not pay. Paid it off in full; and also made a huge deal about getting something from them saying it was paid in full. (Had a bad feeling.)
They had tried to sell me other things like re-financing my mortgage- at 12% interest.
After they would call me every month offerring to sell me some other finance product. I finally told them that if they didn't stop calling me I would complain to Telus about the harrassing phone calls and get their phones cut off.