Pep Store Southgate

Pep Cell Southgate is a store to keep away from. I purchased, for cash, a cell phone. My mistake I did not read the Cash Sale Invoice which I signed. An agent for foneyam *****ulently manipulated the sale and I am now being hounded to make payments for a contract I neither asked for, offered, nor signed for. No credit application was completed and no bank statements or banking details were given to this store. How can I 6 months later be asked to make monthly payments for a CASH SALE? Do not buy from this cell phone store. You will be de*****ed.