user: I don’t understand why some of my channels are missing, this has been going on for weeks and customer service been giving me the run around. They basically told me I should pay for a technician, when this problem arrived when they upgraded my modem
agent: Oh no, let us look into it for you. Are you getting channel unavailable message?
user: Yes I am
agent: Does this happen on all TV's or just one?
user: One of three TVs
agent: Have you had a chance to remove the coax and make sure it is undamaged and then reconnected tightly?
user: Yes, the coax was removed and checked. The cord looks fine, I also tightened it and I’m still receiving the same issue. These were also instructions technical support online gave me, and also the instructions from the box. Still no to avail.
agent: To see if there is something wrong with the box, swap two of the boxes and see if the problem stays with the box or the location.
user: I just swapped the two boxes and the problem seems to stay with location not the box.
agent: Are you able to attempt swapping coaxial cable as well?
user: No I’m unable to switch the coax cables
agent: Please follow and DM us.

The customer is complaining that some of the channels are missing. The agent asked to swap two of the boxes and see the problem persists and if so asked to dm them+.
### Instruction: Below is a conversation between a human and an AI agent. Write a summary of the conversation.

### Input:
user: I don’t understand why some of my channels are missing, this has been going on for weeks and customer service been giving me the run around. They basically told me I should pay for a technician, when this problem arrived when they upgraded my modem
agent: Oh no, let us look into it for you. Are you getting channel unavailable message?
user: Yes I am
agent: Does this happen on all TV's or just one?
user: One of three TVs
agent: Have you had a chance to remove the coax and make sure it is undamaged and then reconnected tightly?
user: Yes, the coax was removed and checked. The cord looks fine, I also tightened it and I’m still receiving the same issue. These were also instructions technical support online gave me, and also the instructions from the box. Still no to avail.
agent: To see if there is something wrong with the box, swap two of the boxes and see if the problem stays with the box or the location.
user: I just swapped the two boxes and the problem seems to stay with location not the box.
agent: Are you able to attempt swapping coaxial cable as well?
user: No I’m unable to switch the coax cables
agent: Please follow and DM us.

### Response:
The customer is complaining that some of the channels are missing. The agent asked to swap two of the boxes and see the problem persists and if so asked to dm them+.