Yes, you are right no doubt about that but there is an exception to the rule, which I can't remember right now. (My mind is on vacation and you are asking a lot of tricky questions). I think it is with the verb to be.
There is a mobile phone, three keys and two lipsticks in my handbag BUT
There are two lipsticks, a mobile phone and three keys in my handbag.
The sentence is clearly ambiguous. If teh Acme Parks and the Recreation Department are separate entities, the first sentence is correct. If "The Acme Parks and Recreation Department" is a single entity, the second sentence is correct.
This is simple: the word "Department" is singular, therefore "offers" is correct, i.e., IT OFFERS. Of course, if one were in Great Britain, he would use OFFER.