Internet connection periodically drops and reconnects

Over the past few weeks, I've been getting these connection drops and I've had to reboot my modem in order to get the connection back. Most of the times, the DSL light continuously flashes and I get no connection. If I'm lucky, the DSL light solidifies and I get a dodgy connection for a couple hours and it drops again.

I've been told it's an issue with my attenuation and impulse noise. I've had more than 4 technicians dispatched to my house saying that they've fixed it and stabilized the signals. The most recent fixed the issue where the connection drops for longer periods of times, but the connection is still really dodgy. The connection still drops but not as often and usually happens in mornings.

I'm currently using a C100a modem from Centurylink and if it matters, it's bridged to a Netgear router. Here are my numbers:

DSL Status

Connection Status
DSL Downstream: 20.127 Mbps
DSL Upstream: 0.639 Mbps
DSL Link Statistics

Link Statistic Status
Broadband Mode Setting: Auto Select
Broadband Mode Detected: VDSL2 - 8A
DSL Link Uptime: 0 Days, 0H:2M:17S
Retrains: 1
Retrains in Last 24 Hours: 1
Loss of Power Link Failures: 0
Loss of Signal Link Failure: 0
Loss of Margin Link Failure: 0
Link Train Errors: 0
Unavailable Seconds: 23
Estimated Loop Length: 1940
Uncanceled Echo: N/A
Transport Mode: PTM
Path Parameter: 201
Priority: 3
Service Type: PTM-Tagged
DSL Power

Levels Downstream Upstream
SNR: 22 dB 13 dB
Attenuation: (DS1)22.8, (DS2)49.9 dB (US1)6.0, (US2)42.0 dB
Power: 16.7 dBm 7.6 dBm
DSL Transport

Transport Downstream Upstream
Packets: 6344 6263
Error Packets: 0 0
24 Hour Usage: 57.21 Mbits 6.38 Mbits
Total Usage: 57.21 Mbits 6.38 Mbits
30 Minute Discarded: 0 136
DSL Channel

Channel Near End Far End
Channel Type: Interleaved Interleaved
CRC Errors: 0 0
30 Minute CRC: 0 0
RS FEC: 0 144
30 Minute FEC: 0 144