Ford of Londonderry

I have a 2017 Leased this year, Ford F150, leased from Ford of Londonderry, I also paid 895.00 for wearcare insurance on my leased vehicle. I took the truck Tuesday for an oil change, while I was there I inquired about my antenna is coming apart,(shredding) Marybeth of the Service Department inspected the antenna and agreed it needs to be changed. She stated, its very distracting with the wires flying around and she only moved the truck in the parking lot. I asked her how much would that be and she said, there is "no charge for antenna or installation" she said the antenna would be in the next day. I asked if I needed an appointment to have antenna changed. She said no, just come in anytime and they would put the new antenna on. So today I drive back to Londonderry Ford to have new antenna put on. Now today I am told I have to pay for antenna and pay for installation if I want it put on or I could pay for the antenna and install it myself. So why was I told differently on Tuesday? Is that what the parts department does. One service person tells you its covered 100% then the next service person 3 days later tells you no its not covered. Shouldn't they all know what's covered and what's not? Conflicting information is very frustrating!