Unless licensed by the State Board of Collection Agencies under this subchapter it is unlawful to:
(1) Engage in the collection of delinquent accounts, bills, or other forms of indebtedness;
(2) Use a fictitious name or any name other than their own in the collection of their own accounts receivable;
(3) Solicit claims for collection; or
(4) Purchase and attempt to collect delinquent accounts or bills.