Reliance Home Comfort review: Monthly service plan

My mother signed a 2 year contract for the monthly service fee plan for her furnace, after 1 year my mother passed away, so I transferred the account to my name, I am now paying the monthly fee of $23.00, and then I get an a letter from collections from the company, that my mom still owes the remaining 12 months of the contract, even though I am now paying the $23 a month for the furnace maintenance, the company is now double dipping, they get $23 a month from me, and $23 from my mother for the same contract, so now they get $46 a month for the same maintenance contract on the same furnace. Tried calling and explaining that my mom passed away, and I am taking over, but they want her to pay out the remaining contract after her death, even though I am now paying it...this company is terrible when it comes to customer service, all they care about is money...