PROMPT RAIN TECHNICAL ASSISTANCE IS NON-EXISTENT!!!

I got the Rain 4G/5G router at the beginning of the lockdown more or less. I've twice gone through a minimum of 5 days without connection and having logged a call to that effect without any assistance. My last call was logged on Thursday 7th May. I expressly asked them to phone me. Yesterday ****h May) they sent me a long technical questionnaire to fill in presupposing advanced technical knowledge of the router. I am not an ISP technician!!!! I am a client who needs assistance. I would like to add the last time they eventually contacted me was after I had published my complaint on Hello Peter.