Terrible service! Problem still not solved over 2months now

I dont know how many people i have to deal with at JET stores in East London to help me fix my account! They say my payment is reflecting on my statement, yes it is but then it is reversed so balance went back up by R300! Like i dont know why i have to explain how an account must be reconciled! When they work with many accounts everyday! Can someone please help me! I cannot keep going to the store its time consuming and then people still dont help me!! Refund my 300rand if you cannot allocate it to my balance on my account! Edcon u reply saying my payment is refelecting but look at the rest of my statement and calculate for yourself! My balance still is short of my payment amount! Call me on ********** 341!