Dear Bounty Manager, my sincere apologies. I just saw that I was accepted in this signature campaign. I didn't realise that until today and I have already started with another campaign. I humbly apologies for the inconvenience. I hope this won't count against me on your future campaigns.
That's OK. Thank you for your interest and cooperation!
We wish you good luck in the campaign that you participate in! Of coursre it won't count against you!