Here is the item:
Bryan had had enough of his sister's loud stereo and bad taste in music, so he went to her room, banged on the door, and teld Melissa that if she refused to reduce the volume, then he would return with his baseball bat to pound her boom box into little bits.

The third verb, teld, is the problem. As you know, the sentence requires the simple past. Told is the correctly spelled form.

Verb Simple Present Simple Past Past Participle
tell tell(s) told told

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