Ever increasing loan balance

My Capitec loan amount keeps going up the minute it comes to less than 49 thousand rand an extra 2000 rand or more to the balance owing, I have tried to make contact and still could not understand why there's added charges because my account is up to date according to my records and Capitec always the first to debit because I use Capitec...So now I am sitting and wondering if I am supposed to pay till forever since the balance keeps growing instead of decreasing as I pay...I must say I am here today and I regret the day I took out this loan with Capitec.