After absolutely no effort from dsv, I received an email staying they cannot contact my number, which has not changed and is on my profile

After absolutely no effort from dsv, I received an email staying they cannot contact my number, which has not changed and is on my profile. I sent an email giving them the number and still nothing. This is absolutely ********** customer service It was easy to take the money and not do the job but when it's time to pay back the money they are nowhere to be found.