Airtel — not receiving signal in roaming

Address:

403802

I p. Saipavan with bearing airtel mobile number [protected] have recently ported to airtel in the month of march or april 2017. At first i recieved signal in roaming i. E in kerala but when i changed my location to goa i stopped recieving signals from airtel and they asked me to take a new sim from andhra itself. So i kept in "safe custody" to not to lose my number if it is not used for months. Last month i. E on julu 31'st i have taken a new sim from airtel store in vijayawada, it worked well till i crossed the border while returning to goa. I stopped recieving signal from 6th august as i just crossed the border of andhra pradesh. Here in goa again i have a new sim in local store nearby vasco and that new sim to stopped recieving signals as soon as i inserted it in my phone and it was showing emergency calls only. First i thought it was my sim tray problem but others sims from other networks are working in the same sim tray but not airtel. I have raised a complaint on this issue to airtel on 7th august 2017 but the actual complaint is registered from airtel 9th august and 11th august i got a response from airtel stating with a service request number 78555330 and our network team is working with the issue and it will be solved on or before 16th august 2017 but the issue is not yet solved and im not at all recieving any signals from airtel to my number and they are not even responding to my mails and asking me to wait.
And my question is???
1) will my isuue wil be solved or not??
2) how many days i have to wait for recieving signal???.
3) i dont want to loosed my number i. E [protected] since it was registered with all my bank accounts and all my contacts in my phone are used to this number.

Please consider this issue at most as i was not able to recieve any signal from airtel apart from emergency calls from the past 10 days. Please do the needfull.