No, you cannot cancel the challan.
Approach the income tax department and file an application for rectification of challan if they accept. You may need to pay some out of pocket expenses (hope you understand what I want to say). Generally, they will do it, if you have filled a wrong section for TDS but I guess that this is not the case.
You may file a revised ITR and claim a refund as a last resort.
If you filled the wrong assessment year, then the only way I think is to file a revised ITR for that PAN.