LTE Connection

I have been experiencing poor LTE connection for weeks. I have called into the cell centre a few times and each time I get a variation of the same story: there are no problems, please re-set your modum, etc. On Saturday, 16 September I spoke to Nonhlanhla at 13h10 and she said there were no issues but she would log a call and I must use the date and time as a reference. A few days later the connection seemed much better so I did not follow up but then a few days ago the problem re-occurred so I called in and was told the technical dept would contact me in 24 - 48 hours (ref: ********** 3). Today I called in and was told that it was actually 72 working hours (9 days...is a looonnnggg time when you are paying for a service that you can't use). Surely this process could be sped up??? What is going to happen to my data that expires at the end of the month? This is VERY disappointing especially as I have never had any issues and your call centre staff are very help (usually).