Beware of customer capital

We signed a contract with datalink for 5 years and was told we own the equipment after 5 years. Custom Capital took over the contract without notifying us that the equipment is now a rental, they have charged excessive monthly charges on our debit orders without our permission, Our contract expired end of October 2025, we told them we do not wish to renew, they are making us pay another 3 months premiums and they have not collected there stuff to-date- loan sharks, we do not hold a contract with them but was with data link, also asked for FSB number to no avail