1and1.com and Collection agency

We were hosting 2 dedicated servers with 1and1 for a few years paying around $600 a month for both. however in the past two months due to some increase traffic between the two servers tehmselves (web server & databse server) the bandwidth spiked so they billed us $7500 each month. so now we owe $15000.

When creating the account i made the mistake of putting my own name (canadian resident) but used our business (registered in the states) visa card. the address used is also a states address (my partners old home address).

so now 1and1 is sending the amount to collection agency. Is there anyway they can link this account back to me just based on my name? even though the visa is a comapny visa and the address is an US address when i live in canada.

the collection agency is NCO. can we usually sort out a deal with them to meet half way or something? i just dont want this to ruin my credit history.