xfinity mobile

I recently moved to a new house where comcast services were not available. It took them 3 months to run new wires to my house which they have finally done. I just had my new comcast services ( tv and internet) installed. Within those three months my bill for xfinity mobile went up almost $100 because it seemed as if i was not a Comcast customer anymore. What can I do to get reimbursed for those months I had to pay extra and also to get my monthly bill back to its original price?