I don't believe that God actually calls anyone to singleness. It is a personal choice on the part of the believer and He will respect their choice, in the same way that He respected Paul's choice to be single. But just because Paul made a personal choice it doesn't mean that it has to be Christian doctrine for those used in the ministry of the gospel.
A person is no closer to God being single than being married. Every believer has Christ in him. "Christ in you, the hope of glory" (Colossians 1:27). So the concept of being close to or far away from God is not a Christian concept. We can't get any closer to Christ than having Him living right inside of us in the Person of the Holy Spirit.
So, if a person decides to remain single because they think they are more spiritual and receive special advantages from God over and above married people, then they may have selfish motives about it, and God does not support or bless selfishness in any form. But if a person decides to remain single because they can live a life that brings glory to Christ and makes them more available to win lost souls to Christ, then God can support that, because it is totally consistent with His principal mission for mankind.
If a person decides to remain unmarried just because they are not personally interested in the marriage bed or having children, then the motive is principally selfish and not primarily for the glory of Christ or the winning of lost souls. Then the Holy Spirit could come to that person and say, "Who is telling you to remain single?"
It is significant that in churches that teach celibacy as a foundation doctrine for ministers and priests, there is now being revealed widespread child sexual abuse and homosexuality.
The Scripture says that the marriage bed is not defiled (Hebrews 13:4). And He did say that man should not be alone (Genesis 2:18). So, to actually call someone to be single and take away their choice whether they want to be single or married, would be a contradiction to His Word, and the Holy Spirit never contradicts Himself.