Business ProfileforLiberty Security Systems Inc

I Purchased my home in 2022, taking possession on July 1st. Upon purchasing the home we were informed that the seller had a contract with the security company that had 18 months remaining from July 1st 2022. The seller was so kind as to pay their remaining contract in full, so we would not have any responsibility for it. After moving in, on July 13th 2022 I signed a contract with Liberty Securities Inc to take over the previous account which was now prepaid. The contract I signed stated "This agreement shall have a term of 18 months" and "the parties hereto have signed this contract to take effect on 22-07-13." although verbally I was informed the contract ended on Dec 31st 2023. A notable date is 18 months from 22-07-13 is January 13th 2024. I was advised I would never pay anything as long as I provide written notice to cancel my account within 30 days of the end of the contract. I sent the required notice on Nov 21st 2023 and received written confirmation from Liberty Security Inc that my cancellation request was received. In January 2024 I began receiving overdue invoice notifications and as of today (February 5th 2024) I am being advised that my contract ends tomorrow, February 6th. This is a seemingly arbitrary date with no connecting to the contract I have signed, or the original owner's contract date. I have cancelled my prepaid account within the required time to notify, but I am being constantly emailed about overdue invoices. In order to take over the services I was forced to agree to a hard credit check, and now I worry that their clerical error will negatively impact my personal credit. In response to my last email to customer service which contained a copy of my contract, I received the extremely helpful response of "It was a pleasure doing business with you. You can pay for the invoice from the link below." Zero customer service.