while they were replacing the timing belt, they "should" have replaced the
water pump along with all the alternator, water & ps belt(s)
it only makes sense from a labor point of view, should your water pump go,
it will save you money if you had it done along with the timing belt.
check your invoice,
it might just need an adjustment.

If it's a belt noise and started immediately after the timing belt
servicing, you should return to the shop that replaced the timing to have
your car checked.  I'm very surprised that the timing belt was replaced
but they didn't replace a 62k drive belt (would have been cracked very
badly) since they had to take it off to get to the timing belt anyway.  At
the very least, they should have recommended you do it.