[Grammar] singular or plural

1.Now shipping and customer service are both downstairs.
Is the sentences correct? Can we use "is" or "services " instead?
2.Then do what I do. Sweet talk them into giving you a good score.
Should we use talking instead?
Thanks for your help!

1. is correct. Don't use is. Use either service or services.

2. Then do what I do: sweet talk them into giving you a good score. (Not talking.)

Rover

Rover_KE said:

1. is correct. Don't use is. Use either service or services.

2. Then do what I do: sweet talk them into giving you a good score. (Not talking.)

Rover

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As for 1. I agree with you. As for 2. sure thing , talk is a noun ,sweet is an adjective,from which we can come to the conclusion that a noun can have the same collocation as its verb.Is that right?
Thanks more!

I should have hyphenated the verb sweet-talk

sweet-talk
▶verb
informal persuade (someone) to do something by insincere flattery or kind words.

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(WordReference dictionary)

Rover