Jet and Nimble are ********

I regret opening an account with Jet they sold my account to Nimble Collection even though I made an arrangement to pay and paid for the account the balance keeps on increasing they charge a ridiculous interest and it keeps increasing instead of decreasing can anyone advise me I am thinking of taking this matter to consumer protection for both Jet and Nimble and if you don’t have an account with Jet don’t ever open one I am never even going to buy anything from their shops